---
product_id: 504779205
title: "1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits"
brand: "spetool"
price: "¥8730"
currency: JPY
in_stock: true
reviews_count: 13
category: "Spe Tool"
url: https://www.desertcart.jp/products/504779205-1-8-inch-spiral-downcut-router-bit-1-4-inch
store_origin: JP
region: Japan
---

# 1/8" cutting diameter - precision groove 3" overall length - extra reach 2.5x longer life coating - durability boost 1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits

**Brand:** spetool
**Price:** ¥8730
**Availability:** ✅ In Stock

## Summary

> 🛠️ Cut Clean, Cut Deep, Cut Ahead of the Pack!

## Quick Answers

- **What is this?** 1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits by spetool
- **How much does it cost?** ¥8730 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/504779205-1-8-inch-spiral-downcut-router-bit-1-4-inch)

## Best For

- spetool enthusiasts

## Why This Product

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

## Key Features

- • **Extended 3-Inch Length:** Reach deeper cuts with unmatched stability and control.
- • **Versatile Compatibility:** Perfect for softwoods, hardwoods, plywood, laminate, and CNC or handheld routers with 1/4" collet.
- • **Precision Downcut Spiral Design:** Ensures clean, chip-free edges and smooth grooves every time.
- • **Cost-Effective Professional Grade:** Delivers high-end performance at a mid-tier price, making quality woodworking accessible.
- • **Premium Carbide with Advanced Coating:** Lasts 2.5x longer than standard bits, maintaining sharpness project after project.

## Overview

The SpeTool 1/8 Inch Spiral Downcut Router Bit features a 1/8" cutting diameter and an extra-long 3" overall length, designed for precision woodworking with minimal tear-out. Its advanced coating extends bit life by 2.5 times, ensuring durability and sharpness for both CNC and handheld routers with a 1/4" shank. Ideal for a wide range of materials including hardwoods, plywood, and laminates, this bit offers professional-grade performance at an unbeatable value.

## Description

SpeTool 1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits - desertcart.com

Review: SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) Review - Category: CNC router bit for woodworking Purchase context I bought this SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) because I’m new to CNC routing and it had strong reviews at an affordable price. Before purchasing, I expected clean, precise cuts comparable to more expensive bits. Unboxing & first impressions The packaging was basic but adequate and included no accessories beyond the bit itself. My first impression was that the bit looked solid with a sharp cutting edge. Testing and real‑world use I used the bit across five woodworking projects (two pine boxes for my granddaughters and several cherry rosary boxes). During this time, I used it to cut inlays, slots and mortises on pine and cherry wood. It performed beautifully, producing clean, chip‑free cuts on both softwood and hardwood. Notable features were its down‑cut spiral design that reduces tear‑out and the durable coated carbide which stays sharp. Over time, the durability was excellent; after five projects it still cuts like new. Pros Delivers clean, precise cuts on pine and cherry wood Feels durable thanks to coated carbide construction Economical price compared to more expensive bits Performs as well as higher‑priced alternatives Cons None experienced so far Value and comparison Compared to similar products, this bit costs less but performs on par with pricier down‑cut bits. The quality far exceeds its cost, making it a great value. Hidden costs: none. Verdict / recommendation Overall, I’m extremely satisfied with this router bit. I would recommend it to other CNC hobbyists and woodworkers. This product is ideal for beginners through experienced woodworkers who need a reliable down‑cut bit, but those seeking a specific cutting diameter or length may need to verify compatibility.
Review: Great performance so far, and the price is reasonable. - The key here is understanding what you are buying and how it works. A compression bit attempts to combine the up-cut and down-cut spiral bits, but in doing so it requires a transition point that goes from up-cut to down-cut. This bit transitions at about 3/16" from the tip of the cutter. This means if you only plunge 3/16", or less, you will only engage the up-cut portion, unless you make more passes on both sides at a depth over 3/16", you will not get the benefit of having both on a single bit. Up-cut leaves a cleaner bottom, down-cut a cleaner surface edge. Basically pick where you will risk tear-out or a rougher surface. To get the best of both your initial cut needs to clear 3/16" or else you have to expand it at full depth. If you are looking for a clean face, as in less surface tear out, and won't be going deep on your cuts... this isn't the right bit. Go buy one of their down-cut spiral bits. For the price I decided to give this brand a go over my normal brand that is quite expensive, and so far so good. Early results - 1 project done - are that it is sharp and when used correctly leaves a good surface and bottom. Longevity is always the question with less expensive bits. This isn't a "cheap" bit, per se, but it is in that mid-tier area. I won't know how this truly does for another couple of months, but if it lasts anywhere over half as long as the other bits, at about half the price, it is a win. I normally avoid 1/4" shank bits when I need to plunge a ways down, but no one seems to make a 1/2" shank compression, so 1/4" it is. If they made this with a 1/2" shank I'd pay more for that in a second. I am not sure if these have an actual coating that will extend life by cooling the bit, or if it is cosmetic only, so don't assume the unique colors mean it has a proprietary coating that another brand has. It does look cool, though, lol. So far, so good, and I am considering testing out a downcut of their as well, instead of my normal brand. The price is very alluring, and if their total line is quality then switching over may be worth it.

## Features

- SPECIFICATION. Down cut router bits 1" cutting length; 1/8" cutting diameter; 1/4" shank; 3" overall length, can be used on routers with 1/4" collect.
- COATING. The new coating provide up to 2.5 times life than the uncoated, make the bit sturdy durable, sharp efficient, smooth stable
- DOWN CUT. Spiral bits used for smoothly downcut groove and slots, Mortises, Cycles and dados leave with clean edge and top surface, better than straight bits
- COMPATIBILITY. This Router Bits is perfect for soft woods, hard woods, Plywood, laminate, OAK, MDF and any hardwood working. It can be used with cnc router and handheld router with 1/4" collet.
- DURABLE AND PRECISE. This downcut router bits are high-quality construction ensures durability and precision, allowing for consistent and accurate cuts.
- SPETOOL SERVICE. Good quality, cost-effective, efficient after-sales service, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BN5R6CHX |
| Best Sellers Rank | #4,464 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Spiral Router Bits |
| Brand | SpeTool |
| Brand Name | SpeTool |
| Customer Reviews | 4.6 out of 5 stars 987 Reviews |
| Cut Type | Down-Cut |
| Cutting Diameter | 0.13 inches |
| Cutting Length | 1 inches |
| Included Components | Plastic Storage Box |
| Item Diameter | 0.25 inches |
| Item Weight | 1.12 ounces |
| Manufacturer | SpeTool |
| Material | Carbide |
| Material Type | Carbide |
| Model | SPLS-D1/4-1/8-D-SPE-X |
| Number of Flutes | 2 |
| Part Number | SPLS-D1/4-1/8-D-SPE-X |
| Size | 1/8" Dia - 1" CL -1/4" Shank |
| Size Name | 1/8" Dia - 1" CL -1/4" Shank |

## Product Details

- **Brand:** SpeTool
- **Cutting Length:** 1 Inches
- **Item Weight:** 0.07 Pounds
- **Material:** Carbide
- **Size:** 1/8" Dia - 1" CL -1/4" Shank

## Images

![1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits - Image 1](https://m.media-amazon.com/images/I/51famK962SL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) Review
*by J***H on October 7, 2025*

Category: CNC router bit for woodworking Purchase context I bought this SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) because I’m new to CNC routing and it had strong reviews at an affordable price. Before purchasing, I expected clean, precise cuts comparable to more expensive bits. Unboxing & first impressions The packaging was basic but adequate and included no accessories beyond the bit itself. My first impression was that the bit looked solid with a sharp cutting edge. Testing and real‑world use I used the bit across five woodworking projects (two pine boxes for my granddaughters and several cherry rosary boxes). During this time, I used it to cut inlays, slots and mortises on pine and cherry wood. It performed beautifully, producing clean, chip‑free cuts on both softwood and hardwood. Notable features were its down‑cut spiral design that reduces tear‑out and the durable coated carbide which stays sharp. Over time, the durability was excellent; after five projects it still cuts like new. Pros Delivers clean, precise cuts on pine and cherry wood Feels durable thanks to coated carbide construction Economical price compared to more expensive bits Performs as well as higher‑priced alternatives Cons None experienced so far Value and comparison Compared to similar products, this bit costs less but performs on par with pricier down‑cut bits. The quality far exceeds its cost, making it a great value. Hidden costs: none. Verdict / recommendation Overall, I’m extremely satisfied with this router bit. I would recommend it to other CNC hobbyists and woodworkers. This product is ideal for beginners through experienced woodworkers who need a reliable down‑cut bit, but those seeking a specific cutting diameter or length may need to verify compatibility.

### ⭐⭐⭐⭐⭐ Great performance so far, and the price is reasonable.
*by T***T on March 16, 2025*

The key here is understanding what you are buying and how it works. A compression bit attempts to combine the up-cut and down-cut spiral bits, but in doing so it requires a transition point that goes from up-cut to down-cut. This bit transitions at about 3/16" from the tip of the cutter. This means if you only plunge 3/16", or less, you will only engage the up-cut portion, unless you make more passes on both sides at a depth over 3/16", you will not get the benefit of having both on a single bit. Up-cut leaves a cleaner bottom, down-cut a cleaner surface edge. Basically pick where you will risk tear-out or a rougher surface. To get the best of both your initial cut needs to clear 3/16" or else you have to expand it at full depth. If you are looking for a clean face, as in less surface tear out, and won't be going deep on your cuts... this isn't the right bit. Go buy one of their down-cut spiral bits. For the price I decided to give this brand a go over my normal brand that is quite expensive, and so far so good. Early results - 1 project done - are that it is sharp and when used correctly leaves a good surface and bottom. Longevity is always the question with less expensive bits. This isn't a "cheap" bit, per se, but it is in that mid-tier area. I won't know how this truly does for another couple of months, but if it lasts anywhere over half as long as the other bits, at about half the price, it is a win. I normally avoid 1/4" shank bits when I need to plunge a ways down, but no one seems to make a 1/2" shank compression, so 1/4" it is. If they made this with a 1/2" shank I'd pay more for that in a second. I am not sure if these have an actual coating that will extend life by cooling the bit, or if it is cosmetic only, so don't assume the unique colors mean it has a proprietary coating that another brand has. It does look cool, though, lol. So far, so good, and I am considering testing out a downcut of their as well, instead of my normal brand. The price is very alluring, and if their total line is quality then switching over may be worth it.

### ⭐⭐⭐⭐⭐ Great for CNC projects
*by R***. on June 21, 2026*

SpeTool is my go to bit for CNC carving. Performance is equal to Freud without the cost. Material I use it in is oak, walnut, maple. Compatible with 1/4 inch shank routers. Up cut leaves a smooth surface at the bottom of the cut. Extremely accurate.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-30*