---
product_id: 201577941
title: "49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black"
brand: "k tool international"
price: "B/.60"
currency: PAB
in_stock: true
category: "K Tool International"
url: https://www.desertcart.com.pa/products/201577941-49403-universal-wrench-extender-adaptor-1-2-inch-or-21mm
store_origin: PA
region: Panama
---

# Drop forged & heat treated for max strength 12-inch extendable leverage boost 1/2 inch & 21mm hex drive universal fit 49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black

**Brand:** k tool international
**Price:** B/.60
**Availability:** ✅ In Stock

## Summary

> 🔩 Unlock next-level torque with the ultimate wrench extender!

## Quick Answers

- **What is this?** 49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black by k tool international
- **How much does it cost?** B/.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/201577941-49403-universal-wrench-extender-adaptor-1-2-inch-or-21mm)

## Best For

- k tool international enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Drop forged alloy steel body with heat treatment ensures durability under heavy use.
- • **Compact & Ready:** Sleek black finish and 12-inch length for easy storage and quick deployment.
- • **Versatile Extension:** Works with a wide range of wrench styles—no need to switch tools mid-job.
- • **Maximize Your Torque:** Extend wrench reach effortlessly to conquer stubborn bolts with added leverage.
- • **Universal Compatibility:** Seamlessly pairs with 1/2 inch drive or 21mm hex tools for ultimate flexibility.

## Overview

The K Tool International 49403 Universal Wrench Extender Adaptor is a 12-inch, drop forged, heat-treated alloy steel tool designed to increase leverage on stubborn nuts and bolts. Compatible with both 1/2 inch drive and 21mm hex wrenches, it offers versatile, durable, and compact extension for professional and DIY use.

## Description

K Tool International 49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black - desertcart.com

## Features

- INCREASED LEVERAGE TOOL: Designed to extend wrench reach by pairing with another wrench or power bar, helping apply additional leverage to stubborn or overtightened nuts and bolts
- UNIVERSAL ADAPTER DESIGN: Compatible with half inch drive connections or twenty one millimeter hex drive use, allowing flexible integration with common hand tools
- DROP FORGED CONSTRUCTION: Manufactured from drop forged material and heat treated to support strength and durability under increased torque and repeated professional use
- VERSATILE EXTENSION APPLICATION: Built to work with a wide range of wrench styles, enabling users to lengthen tools as needed without changing primary fastening methods
- COMPACT SHOP SOLUTION: Designed for easy storage and quick deployment, supporting mechanical and industrial service tasks where added leverage is occasionally required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001GS0ZBY |
| Best Sellers Rank | #88,683 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #274 in Socket Wrenches #331 in Screwdrivers |
| Brand Name | K Tool International |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,574) |
| Finish Types | Painted |
| Head Style | Fixed Square |
| Included Components | K TOOL INTERNATIONAL - Universal Wrench Extender Adaptor (49403) |
| Item Length | 12 inches |
| Item Type Name | K TOOL INTERNATIONAL - Universal Wrench Extender Adaptor (49403) |
| Jaw Capacity | 0.5 inches |
| Manufacturer | K Tool International |
| Manufacturer Part Number | 49403 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material Type | Alloy Steel |
| Measurement Standard | Metric, SAE |
| Model Number | 49403 |
| Number of Items | 1 |
| Operation Mode | Mechanical |
| Package Quantity | 1 |
| UPC | 769622494030 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** K Tool International
- **Color:** Black
- **Item Length:** 12 inches
- **Item Package Quantity:** 1
- **Material:** Alloy Steel

## Images

![49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black - Image 1](https://m.media-amazon.com/images/I/51bc3nEFDnL.jpg)

## Questions & Answers

**Q: what is the torque capacity?**
A: No listed value that i saw but I have flexed my 4 foot breaker bar on this and never had any amount of give

**Q: will a 1/2" braker bar fit in the area that a hand wrench fits in the picture?**
A: No, this tool is great for getting the nut loose on frozen tie rods!

**Q: Am i using this wrong? Every situation I only seem to tighten?**
A: They need to make an additional mirror image adapter. With this one, if you use the breaker bar facing the bolt, you can only tighten it. Of course, you can flip the adapter to loosen, but you have to place the breaker bar on the opposite side of the bolt. Sometimes, you only have enough space for one side.

**Q: Que material es ?**
A: Otros vendedores en Amazon aseguran que es aleación de acero esta extension.

## Frequently Bought Together

- K Tool International 49403 Universal Wrench Extender Adaptor, 1/2 Inch or 21mm Hex Drive, Drop Forged Body with Heat Treatment, Extendable, Black
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**Shop now:** [https://www.desertcart.com.pa/products/201577941-49403-universal-wrench-extender-adaptor-1-2-inch-or-21mm](https://www.desertcart.com.pa/products/201577941-49403-universal-wrench-extender-adaptor-1-2-inch-or-21mm)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-19*