---
product_id: 9257038
title: "Isometric Exercise Equipment - Steel Bow 20\", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs"
brand: "bullworker"
price: "¥67263"
currency: JPY
in_stock: true
reviews_count: 8
category: "Bullworker"
url: https://www.desertcart.jp/products/9257038-isometric-exercise-equipment-steel-bow-20-portable-at-home-gym
store_origin: JP
region: Japan
---

# Portable 20" compact design 0-130 lbs adjustable resistance Laser-etched aluminum build Isometric Exercise Equipment - Steel Bow 20", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs

**Brand:** bullworker
**Price:** ¥67263
**Availability:** ✅ In Stock

## Summary

> 💥 Unlock powerhouse strength anywhere, anytime with the Steel Bow!

## Quick Answers

- **What is this?** Isometric Exercise Equipment - Steel Bow 20", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs by bullworker
- **How much does it cost?** ¥67263 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/9257038-isometric-exercise-equipment-steel-bow-20-portable-at-home-gym)

## Best For

- bullworker enthusiasts

## Why This Product

- Trusted bullworker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Gym in Your Backpack:** Compact 20-inch Steel Bow with a luxury carrying case lets you train anywhere—no bulky machines, no excuses.
- • **Strength on Your Terms:** Adjust resistance from 0 to 130 lbs for a fully customizable workout that fits your evolving fitness goals.
- • **Built to Last a Lifetime:** Premium aluminum construction with coated springs and ergonomic handles ensures durability and smooth workouts for decades.
- • **Precision Muscle Targeting:** Isometric technology delivers rapid strength gains up to 66% faster by engaging muscles with static holds.
- • **Joint-Friendly Full Body Fitness:** Low-impact design protects your joints while sculpting arms, chest, back, shoulders, and abs effectively.

## Overview

The Bullworker Steel Bow 20" is a portable, durable isometric exercise device offering adjustable resistance from 0 to 130 lbs. Crafted from laser-etched aluminum with ergonomic handles, it targets multiple muscle groups through low-impact static exercises proven to accelerate strength gains by up to 66%. Designed for all fitness levels, it includes five interchangeable springs, a workout manual, and a premium carrying case—making it the ultimate compact home gym solution trusted for over 50 years.

## Description

desertcart.com: Bullworker Isometric Exercise Equipment - Steel Bow 20", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs : Sports & Outdoors

Review: The Best Kept Secret in Fitness - Ok, first i say to get this out of the way, no I'm not paid, padded, prodded, or patted to give my thoughts on the Bullworker in this case the Steel Bow. When I was a young boy, we are talking like quite awhile back. I had an opportunity to have one of these. It had such a carry over effect, that it stayed with me throughout high school, out into football, weightlifting the whole thing. People under estimates these little gems. I get so tickled, that's why they can say, "The Best Kept Secret In Fitness". Why? My dear friend. Sure for more than 20 years or better hospitals, and such incorporate isometrics into Rehabilitation, because it's fast and effective to get one quickly onto the road to recovery. Please don't think it is not effective because of it's lightweight...think again. Look at a little of its History. Bruce Lee used a Bullworker during a point in his career. Muhammad Ali I believe help to promote it. Isometric exercise was used in space missions, because besides weights taking up a lot of space (no pun intended) there was the issue of no gravity, so what use would weights be. Then there is Alexander Zass, best known as the Father of Isometric workouts. He was a strongman who bent steel, carried a mid size horse over his back, and many more incredible stunts, was he known for a lot of weightlifting, not much, matter of fact he came to develop his own isometric workout. Back to the Bullworker. It's secret lies in the fact that it's easy on the joints, can tone, define, build strength, and make you Stronger and Quicker without hurting yourself. All that is even needed is only 60-70% of your strength for gains. But today they have all kinds of different exercises with the Bullworker Program. They usually come with a wallchart, and or heavy duty carrying case. Not to mention you can get different accesories to add on, and they help extend to even more exercise and variety. As of now they have the " Bow Classic" Bullworker about 36" has 2 springs 0-50 and 50+ ..the Classic has etched in levels with a ring as well as the other that lets you know how much you are doing..good for 6'0 and above, now it says that it reads 260 at max, all I know is, once there was being offered $20 bills at a Arnold Schwarzenegger Classic if anybody could compress and this was the older models probably not as strong, but nevertheless I believe it were only 4 out of like a hundred or so that could do it, it was discovered they all benched over 400 lbs. and The "Steel Bow" Bullworker 20" good for under 6'0. But that is even not written in stone, a lot of guys and gals prefers the smaller one of is equally as strong. It comes as of date with 3 springs the reading doesn't go as high, but I would not want to try and use the third spring to try a ten second max. Really a person has to try one to believe it. They are like anything, you can't like just look at it and say it works. They are fast and easy to use, no downtime, no changing weights, machines...and like only 7 seconds per exercise and you are done! You can literally do a 5 minute smooth routine and like bam, done! Matter of fact they often would say this, look into the mirror today, then look again in two weeks you will already start seeing results. Most first time users are amazed with the very first workout because of the way it feels in their muscles. Not only that but the Bullworker will build tendon strength, I believe that may be part of its Secret..but my advice read what others say especially on like a Bullworker Site, or like on a face book ...there are guys who have had these since like for 20, 30 years, and some of them have actually used them for 30, 40 years...even weightlifting people who wound up with busted up joints comes around and uses them..All I can say is you got to actually experience one first hand. These are the REAL DEAL no knock-offs, you buy it, they will last most people 20-30 years or even a Lifetime. Many guys had one for like 20-30 years, then pass it down to their children, friend, next of kin...It's almost like a Secret Club or hidden thing, but once you've in or get involved you're There. Hope this helps.
Review: Everything it says it is and more! - I gave my first Bullworker (purchased in 1973!!) to my son a few years ago, and occasionally wished I had it back. I recently realized that I was becoming less and less able to perform some physical activities. so I decided to purchase another. After watching several videos and reading reviews, I settled on the Steel Bow Classic model as it seemed to be more applicable to what I wanted to do. I also did exhaustive research on isometric exercise. I had come to believe some of the negative press on Isometrics, but came to learn that almost all the negative research on isometrics was either flawed or simply non-existent. Latest serious research, however, is unanimous; isometric exercise is the most effective exercise for beginners, those at an intermediate-level of fitness and seniors who are looking for something simple and fast that will help them dramatically improve their fitness level. Fact is, isometric exercise, when used with proper breathing techniques, has been found to reduce blood-pressure while increasing strength, cardio-vascular health and overall fitness levels almost twice as fast as isotonic and aerobic exercise while greatly reducing stress on bones, joints and tendons. Isometrics also makes it easier to maintain a level of fitness once attained. From there, the decision to actually purchase the Steel Bow was easy. I received the equipment on the date promised and was extremely pleased with what I found when I opened the box. The Steel Bow absolutely oozes quality. Over the years I have owned several different pieces of exercise equipment, some costing 20 times more that the Steel Bow, and none of those products showed the level of fit and finish shown by the Bullworker. The Bullworker I gave to my son is now 46 years old and going strong; it's easy to see that this Steel Bow is built to a higher standard of production and assembly. I was off to a good start. Attention to detail is evident in every aspect of the equipment. There are two additional, higher resistance springs included, there is a spiral bound, heavy card-stock, glossy book with dozens of exercises orgainzed by the area, a likewise high-quality wall chart for easy reference while doing a workout, and a super high quality case has a special pocket for the different springs. There is even a non-slip rubber pad to prevent slippage when an exercise calls for resting one of the handles on the floor or on one's knee. As for the exercises? Well, I have only just begun, but after the FIRST DAY of running through some of the basic exercises that I remember from years ago, I am confident that anyone who tries the Steel Bowl and uses it AS DIRECTED will notice exactly what I noticed; an almost immediate sense of increased strength and power. I'm on my third day now, and I can tell you that it is no illusion. The Steel Bow by Bullworker is specifically designed for isometrics, and isometrics is probably the single best mode of exercise for most everyone who will do it as per directed. P.S. It is important to note, isometric exercises typically consist of one to three compression or extension exercises that are then HELD STATIC for a period of 7 to 10 seconds. After years of lifting weights and doing calisthenics, it is hard to believe, without actually trying it, that isometric exercise as described can have a GREATER impact on your strength and fitness than either weights or calisthenics, but it can and WILL, if you commit to the program. Yours, for better health!! Michael Schmidtman

## Features

- Bullworker Steel Bow 20” - A game changer for on-the-go workouts. With no setup and compact size, this portable home gym equipment is easy to transport, making strength & fitness accessible to everyone, regardless of space, time or budget constraints
- Muscle Targeting - Consider the Steel Bow a Bullworker dumbbell with portability, exercise versatility, and muscle targeting that can lead to quicker, more precise results. It’s great for Iso-Motion, muscle definition and building functional fitness
- Low-Impact Full Body Workout - Joint-friendly bicep workout, back workout, ab trainer, leg, arm, shoulder & chest workout equipment for men & women with an adjustable resistance between 0-130lbs - the perfect portable gym gear for all fitness levels
- Accelerate Your Gains - Harness the science of isometric exercise equipment to supercharge your muscle development journey. The Bull Worker renowned techniques deliver unparalleled strength gains up to 66% faster than traditional weightlifting*
- Excellent Craftsmanship - Laser-etched aluminum construction, coated springs and ergonomic handles ensure smooth workouts. Plus, Bullworker at home gym equipment includes workout routines, exercise breakdowns, and a carry case for on-the-go training

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000LQKABM |
| Archery Draw Length | 51 Centimeters |
| Archery Draw Weight | 58.97 Kilograms |
| Best Sellers Rank | #71,182 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #68 in Strength Training Upper Body Machines |
| Brand | Bullworker |
| Brand Name | Bullworker |
| Color | Matte Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (746) |
| Date First Available | October 2, 2003 |
| Global Trade Identification Number | 00896529000016 |
| Hand Orientation | Ambidextrous |
| Included Components | 5 Interchangeable Variable Resistance Springs, Instruction Manual and 90 Day Routine, Luxury Canvas Carrying Case, Non-Slip Pad |
| Item Dimensions LxWxH | 20 x 2 x 4 inches |
| Item Package Dimensions L x W x H | 22.87 x 5.91 x 3.39 inches |
| Item Weight | 1 Kilograms |
| Manufacturer | Bullworker Fitness |
| Material | Aluminum |
| Model Name | Steel Bow |
| Number of Items | 1 |
| Package Weight | 2.2 Kilograms |
| Part Number | 896529000016 |
| Size | 20" |
| UPC | 896529000016 |
| Warranty Description | 5 Years |

## Product Details

- **Brand:** Bullworker
- **Color:** Matte Black
- **Item Weight:** 1 Kilograms
- **Material:** Aluminum
- **Model Name:** Steel Bow

## Images

![Isometric Exercise Equipment - Steel Bow 20", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs - Image 1](https://m.media-amazon.com/images/I/71kAdwYh6sL.jpg)

## Questions & Answers

**Q: will this beef up my forearms? also, how is it for waist and leg workouts?**
A: Yes, to forearms. Also, yes to abdominals (waist). Somewhat short for leg workouts, but workable.  You will have a full description of all exercises. The best solution is to buy the Steel Bow and the Bow Classic for variety and optimum range of motion.

**Q: Why doesn't Amazon sell this on Prime? i can buy it for $85 free ship on Bullworker site?**
A: Where do you see it for $85?

**Q: How much weight resistance is the spring that is already inside of it?**
A: I don't know the exact weight resistance of the spring initially in it but it is VERY soft.  Pumping or squeezing and holding this spring is more of an aerobic exercise - expect to be able to do 100 or more.  It comes with 2 additional springs that are very easy to change - no tools required.  My biggest complaint with the unit is that the progression between springs is extreme.  The first one is probably fine since it would be good for weak children and people well into their 70's and 80's.  The next level up is quite stiff and resistive requiring some degree of strength.  The final spring feels like a steel bar to this 60 year old!

**Q: whats the circular rubber pad that comes with the set used for?**
A: exercises that work on your abs, lats, and obliques have you sit on a chair, place one end of the instrument on the chair at various places (between your legs, on the outside of your thigh, etc) and compress the spring with both hands while the steelbow is slightly angled.  The rubber pad is used on the table or chair to both protect the surface of the chair (in my case I use a very sturdy coffee table) and to help prevent the handle on the chair or table from slipping.  I hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Best Kept Secret in Fitness
*by L***R on December 9, 2017*

Ok, first i say to get this out of the way, no I'm not paid, padded, prodded, or patted to give my thoughts on the Bullworker in this case the Steel Bow. When I was a young boy, we are talking like quite awhile back. I had an opportunity to have one of these. It had such a carry over effect, that it stayed with me throughout high school, out into football, weightlifting the whole thing. People under estimates these little gems. I get so tickled, that's why they can say, "The Best Kept Secret In Fitness". Why? My dear friend. Sure for more than 20 years or better hospitals, and such incorporate isometrics into Rehabilitation, because it's fast and effective to get one quickly onto the road to recovery. Please don't think it is not effective because of it's lightweight...think again. Look at a little of its History. Bruce Lee used a Bullworker during a point in his career. Muhammad Ali I believe help to promote it. Isometric exercise was used in space missions, because besides weights taking up a lot of space (no pun intended) there was the issue of no gravity, so what use would weights be. Then there is Alexander Zass, best known as the Father of Isometric workouts. He was a strongman who bent steel, carried a mid size horse over his back, and many more incredible stunts, was he known for a lot of weightlifting, not much, matter of fact he came to develop his own isometric workout. Back to the Bullworker. It's secret lies in the fact that it's easy on the joints, can tone, define, build strength, and make you Stronger and Quicker without hurting yourself. All that is even needed is only 60-70% of your strength for gains. But today they have all kinds of different exercises with the Bullworker Program. They usually come with a wallchart, and or heavy duty carrying case. Not to mention you can get different accesories to add on, and they help extend to even more exercise and variety. As of now they have the " Bow Classic" Bullworker about 36" has 2 springs 0-50 and 50+ ..the Classic has etched in levels with a ring as well as the other that lets you know how much you are doing..good for 6'0 and above, now it says that it reads 260 at max, all I know is, once there was being offered $20 bills at a Arnold Schwarzenegger Classic if anybody could compress and this was the older models probably not as strong, but nevertheless I believe it were only 4 out of like a hundred or so that could do it, it was discovered they all benched over 400 lbs. and The "Steel Bow" Bullworker 20" good for under 6'0. But that is even not written in stone, a lot of guys and gals prefers the smaller one of is equally as strong. It comes as of date with 3 springs the reading doesn't go as high, but I would not want to try and use the third spring to try a ten second max. Really a person has to try one to believe it. They are like anything, you can't like just look at it and say it works. They are fast and easy to use, no downtime, no changing weights, machines...and like only 7 seconds per exercise and you are done! You can literally do a 5 minute smooth routine and like bam, done! Matter of fact they often would say this, look into the mirror today, then look again in two weeks you will already start seeing results. Most first time users are amazed with the very first workout because of the way it feels in their muscles. Not only that but the Bullworker will build tendon strength, I believe that may be part of its Secret..but my advice read what others say especially on like a Bullworker Site, or like on a face book ...there are guys who have had these since like for 20, 30 years, and some of them have actually used them for 30, 40 years...even weightlifting people who wound up with busted up joints comes around and uses them..All I can say is you got to actually experience one first hand. These are the REAL DEAL no knock-offs, you buy it, they will last most people 20-30 years or even a Lifetime. Many guys had one for like 20-30 years, then pass it down to their children, friend, next of kin...It's almost like a Secret Club or hidden thing, but once you've in or get involved you're There. Hope this helps.

### ⭐⭐⭐⭐⭐ Everything it says it is and more!
*by D***N on April 17, 2019*

I gave my first Bullworker (purchased in 1973!!) to my son a few years ago, and occasionally wished I had it back. I recently realized that I was becoming less and less able to perform some physical activities. so I decided to purchase another. After watching several videos and reading reviews, I settled on the Steel Bow Classic model as it seemed to be more applicable to what I wanted to do. I also did exhaustive research on isometric exercise. I had come to believe some of the negative press on Isometrics, but came to learn that almost all the negative research on isometrics was either flawed or simply non-existent. Latest serious research, however, is unanimous; isometric exercise is the most effective exercise for beginners, those at an intermediate-level of fitness and seniors who are looking for something simple and fast that will help them dramatically improve their fitness level. Fact is, isometric exercise, when used with proper breathing techniques, has been found to reduce blood-pressure while increasing strength, cardio-vascular health and overall fitness levels almost twice as fast as isotonic and aerobic exercise while greatly reducing stress on bones, joints and tendons. Isometrics also makes it easier to maintain a level of fitness once attained. From there, the decision to actually purchase the Steel Bow was easy. I received the equipment on the date promised and was extremely pleased with what I found when I opened the box. The Steel Bow absolutely oozes quality. Over the years I have owned several different pieces of exercise equipment, some costing 20 times more that the Steel Bow, and none of those products showed the level of fit and finish shown by the Bullworker. The Bullworker I gave to my son is now 46 years old and going strong; it's easy to see that this Steel Bow is built to a higher standard of production and assembly. I was off to a good start. Attention to detail is evident in every aspect of the equipment. There are two additional, higher resistance springs included, there is a spiral bound, heavy card-stock, glossy book with dozens of exercises orgainzed by the area, a likewise high-quality wall chart for easy reference while doing a workout, and a super high quality case has a special pocket for the different springs. There is even a non-slip rubber pad to prevent slippage when an exercise calls for resting one of the handles on the floor or on one's knee. As for the exercises? Well, I have only just begun, but after the FIRST DAY of running through some of the basic exercises that I remember from years ago, I am confident that anyone who tries the Steel Bowl and uses it AS DIRECTED will notice exactly what I noticed; an almost immediate sense of increased strength and power. I'm on my third day now, and I can tell you that it is no illusion. The Steel Bow by Bullworker is specifically designed for isometrics, and isometrics is probably the single best mode of exercise for most everyone who will do it as per directed. P.S. It is important to note, isometric exercises typically consist of one to three compression or extension exercises that are then HELD STATIC for a period of 7 to 10 seconds. After years of lifting weights and doing calisthenics, it is hard to believe, without actually trying it, that isometric exercise as described can have a GREATER impact on your strength and fitness than either weights or calisthenics, but it can and WILL, if you commit to the program. Yours, for better health!! Michael Schmidtman

### ⭐⭐⭐⭐ Excellent device for isometric exercise
*by C***N on April 19, 2018*

First this is a sturdy well made product. I already follow an effective full body workout and have done so for almost 60 years. I purchased this to maintain strength on trips, but haven't made any trips since the purchase. However, I have been using it for isometric exercise after my usual routines. The original isometric idea was based around pulling as hard as possible against an immovable force and in the early research of which I am aware they were looking at emulating the Olympic lifts, at that time there were three. Because of this many muscles throughout the body were involved at one time causing a large increase in blood pressure during the lift. The Bullworker does not involve more than a few muscles at a time so there should be no concern about blood pressure. I have found that exercises in my usual routine feel easier after a couple of weeks of the isometric addition. I think this works better than pulling against a stationary object because the spring creates a tension that the muscles must overcome to maintain position. Pulling against a stationary object sometimes results in unknowingly reducing tension. So this is an excellent device for isometric isolation movements. Because it has a limited range of motion you have to do many exercises to work the muscles through a full range. Because of this I will keep using my isotonic routines and use the Steel Bow as a strength supplement. I imagine this could be effective even with the limited range of motion for someone who does not follow another type of routine. I use weights, callisthenics and a couple of simple machines.

## Frequently Bought Together

- Bullworker Isometric Exercise Equipment - Steel Bow 20", Portable at Home Gym Equipment for Back, Shoulder, Chest, Biceps, Triceps, Abs, Arm Workout, All in One Exerciser for Men & Women, 0-130lbs
- Bullworker X5 Pro 28" - Isometric Exercise Equipment, Strength Training Portable at Home Gym Equipment for Back, Shoulder, Biceps, Triceps, Abs, Chest and Arms, Home Workout Exerciser for Men & Women
- Iso-Bow Pro by Bullworker | The Isometric Pocket-Companion for Strength Training, Stretching, and Working Out. Use self-Resistance to circulate Blood Flow, Pump Muscles. Yoga or Pilates Exercises.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*