---
product_id: 307109115
title: "6.5\" Cold Steel Koga SD1 Self Defence Tool Made of High Impact Polymer Good for Self Defense Security Sports"
brand: "guanma"
price: "¥4539"
currency: JPY
in_stock: true
reviews_count: 8
category: "Guanma"
url: https://www.desertcart.jp/products/307109115-6-5-cold-steel-koga-sd1-self-defence-tool-made
store_origin: JP
region: Japan
---

# 4.3 oz lightweight power High impact polymer durability 6.5" compact self-defense size 6.5" Cold Steel Koga SD1 Self Defence Tool Made of High Impact Polymer Good for Self Defense Security Sports

**Brand:** guanma
**Price:** ¥4539
**Availability:** ✅ In Stock

## Summary

> 🛡️ Small tool, big impact — your discreet defense upgrade!

## Quick Answers

- **What is this?** 6.5" Cold Steel Koga SD1 Self Defence Tool Made of High Impact Polymer Good for Self Defense Security Sports by guanma
- **How much does it cost?** ¥4539 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/307109115-6-5-cold-steel-koga-sd1-self-defence-tool-made)

## Best For

- guanma enthusiasts

## Why This Product

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

## Key Features

- • **Trusted & Rated:** 4.7-star user approval for reliability and performance
- • **Compact Powerhouse:** 6.5 inches of sleek, portable self-defense readiness
- • **Precision Leverage:** Designed to maximize control when restraining with ease
- • **Unmatched Durability:** Crafted from high-density polyethylene for peak toughness
- • **Intermediate Impact Tool:** Perfect balance of force and control for real-world defense

## Overview

The 6.5" Cold Steel Koga SD1 is a compact, high-impact polymer self-defense tool weighing just 4.3 oz. Engineered for durability and effective leverage, it offers an ideal balance of power and portability for personal security, favored by users for its reliable performance and sleek design.

## Description

Innovative Classic DesignMaterial: high density polyethylene Product weight: 4.3 oz 6.5 Long & 0.9 Diameter Feature Made of High Impact Polymer, High quality build materials for peak performance and durability Perfect aid to leverage when restraining an individual Use for intermediate impact tool, small yet powerful self-defense tool SIZE:165*24*24MM Package includes: 1x Koga

Review: Solid - This listing IS for the COLD STEEL Koga SD1. It poly pouched and peg board carded with cold steel packaging. Quality is what I would expect for this item.
Review: Good for self-defense if you teach yourself how to use it - After doing some training with it, and modifying it for me, I'm thoroughly happy with this item

## Features

- Innovative Classic Design
- High quality build materials for peak performance and durability
- Perfect aid to leverage when restraining an individual
- Use for intermediate impact tool
- Small yet powerful self-defense tool

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZY189LZ |
| Best Sellers Rank | #221,728 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #5,195 in Tactical & Personal Defense Equipment |
| Brand Name | guanma |
| Customer Reviews | 4.7 4.7 out of 5 stars (141) |
| Date First Available | August 14, 2018 |
| Item Package Dimensions L x W x H | 8.27 x 4.13 x 0.63 inches |
| Manufacturer | szwshh |
| Package Weight | 0.07 kg |
| Suggested Users | unisex |

## Images

![6.5" Cold Steel Koga SD1 Self Defence Tool Made of High Impact Polymer Good for Self Defense Security Sports - Image 1](https://m.media-amazon.com/images/I/41V65h5kmdL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid
*by A***1 on April 20, 2026*

This listing IS for the COLD STEEL Koga SD1. It poly pouched and peg board carded with cold steel packaging. Quality is what I would expect for this item.

### ⭐⭐⭐⭐⭐ Good for self-defense if you teach yourself how to use it
*by S***P on November 16, 2025*

After doing some training with it, and modifying it for me, I'm thoroughly happy with this item

### ⭐⭐⭐⭐⭐ Frees up your fist/Especially Easy for those w/out martial training
*by B***B on September 21, 2022*

Firstly, it has some sharp mold release excess plastic that needs filing off in places that will cut into your flesh when holding it, but of course that is not a deal breaker. Secondly, lightweight and fits into the closed fist such that you still want to punch. So in explanation it feels as if you can just have it in your fist while doing closed fist work, and then use as necessary/desired for each of your particular business needs. You will need to adapt your game plan to it, as what I have noticed with these sorts of weapons is that each has its own heft, and feel and how "it desires" to be operated (I had mistakenly lumped tactical pens, and various shapes of these as all operating the same). Very small and will easily carry in shirt/pants pocket. I bought some tactical pens and then just received this, and I found that the pens have a different even though the "same" usage profile, but I found this kinda fits the bill more of what I was wanting from both the tactical pen and this item, but I think this item is more efficient as the slightly larger grip profile gives more effective usage without such definition of how the item has to be used as dictated by a thinner profile and such mechanics as inherent in each. in further example, I would think this item would instantly be more usable in an unskilled carrier than say the tactical pens, as I think this item would be more consistent with a natural motion and gripping action and "lay" skill set than the tactical pen. I think the tactical pen with an unskilled carrier and determined attacker would be less easy to wield and retain than this item.

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-11*