---
product_id: 675900116
title: "WORKPRO 1/2-Inch Drive Impact Extension Bar Sets, 3 Piece-3, 6, 8 Inch Socket Extension, Hardened and Heat Treated CR-MO Steel with Black Manganese Phosphate Finish"
brand: "workpro"
price: "$119"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/675900116-workpro-1-2-inch-drive-impact-extension-bar-sets-3
store_origin: NZ
region: New Zealand
---

# 3 Sizes (3", 6", 8") - Versatile reach Premium CR-MO Steel - Ultimate durability Manganese Phosphate Finish - Rust & corrosion resistant WORKPRO 1/2-Inch Drive Impact Extension Bar Sets, 3 Piece-3, 6, 8 Inch Socket Extension, Hardened and Heat Treated CR-MO Steel with Black Manganese Phosphate Finish

**Brand:** workpro
**Price:** $119
**Availability:** ✅ In Stock

## Summary

> 🔧 Extend Your Reach, Elevate Your Craft!

## Quick Answers

- **What is this?** WORKPRO 1/2-Inch Drive Impact Extension Bar Sets, 3 Piece-3, 6, 8 Inch Socket Extension, Hardened and Heat Treated CR-MO Steel with Black Manganese Phosphate Finish by workpro
- **How much does it cost?** $119 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/675900116-workpro-1-2-inch-drive-impact-extension-bar-sets-3)

## Best For

- workpro enthusiasts

## Why This Product

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

## Key Features

- • **Versatile 3-Piece Set:** Includes 3", 6", and 8" extensions to effortlessly reach tight, hard-to-access fasteners—no more contorting or guesswork.
- • **Universal Compatibility:** Seamlessly fits any 1/2" drive electric, pneumatic, or hand wrench, making it your go-to for automotive, chemical, and assembly tasks.
- • **Secure & Ergonomic Design:** Locking ball stud and multi-purpose pinhole guarantee a firm, stable connection—work confidently without worrying about slippage.
- • **Precision Laser-Etched Sizes:** Clear, permanent markings on each bar ensure quick size identification, saving you time on every project.
- • **Built to Last with Premium CR-MO Steel:** Heat-treated for superior hardness and toughness, engineered to withstand the toughest jobs without fail.

## Overview

The WORKPRO 1/2-Inch Drive Impact Extension Bar Set features three heat-treated chrome molybdenum steel bars (3", 6", 8") with a corrosion-resistant manganese phosphate finish. Designed for durability and precision, these extensions fit all 1/2" drive tools and provide secure, ergonomic handling to access hard-to-reach fasteners with ease.

## Description

WORKPRO 1/2-Inch Drive Impact Extension Bar Sets, 3 Piece-3, 6, 8 Inch Socket Extension, Hardened and Heat Treated CR-MO Steel with Black Manganese Phosphate Finish

## Features

- Premium CR-MO: WORKPRO Impact Extension Bar Sets are made from premium chrome molybdenum steel by heat treatment for high hardness and good toughness, the surface is coated with Manganese Phosphate to prevent rust and corrosion for durability, and Laser-etched brand and size words are easy to read.
- Different and Clear Sizes: This 1/2" extension set includes three commonly used sizes: 3, 6, and 8-inch, which can reach into the narrow range and meet your needs in different usage scenarios, making your work easier and avoiding injury.
- High Compatibility: whether it is electric, pneumatic or hand wrench, as long as it meets 1/2 drive, this socket extension set can be compatible with it to meet your different needs in automotive, chemical and assembly fields.
- Comfortable & Ergonomic Design: The drive end has a multi-purpose pinhole to ensure the extension bar can be firmly seated on the drive handle. The end of the impact driver extension has a ball stud that forms a locking mechanism that prevents the extension bar from falling, increasing its stability and safety.
- Access Hard-to-Reach Fasteners with Ease: These impact extension bars are used with different impact wrenches to increase their length, and access to hard-to-reach fasteners, making you're easily taking all the fuss out of auto repair tasks.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Hang Zhou Great Star Industrial Co., Ltd. |
| Part number | W074522AE |
| Item Weight | 789 g |
| Package Dimensions | 22.81 x 6.4 x 3.91 cm; 789 g |
| Item model number | W074522A |
| Size | 1/2" Drive: (3", 6", 8") |
| Finish | Manganese Phosphate Finish |
| Material | Chrome Molybdenum Steel |
| Number Of Pieces | 3 |
| Compatible Fastener Range | 0.5 inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** WORKPRO
- **Item length:** 8 Inches
- **Material:** Chrome Molybdenum Steel
- **Finish type:** Manganese Phosphate Finish
- **Number of pieces:** 3

## Images

![WORKPRO 1/2-Inch Drive Impact Extension Bar Sets, 3 Piece-3, 6, 8 Inch Socket Extension, Hardened and Heat Treated CR-MO Steel with Black Manganese Phosphate Finish - Image 1](https://m.media-amazon.com/images/I/61WAwZxC9qL.jpg)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-11*