---
product_id: 394498467
title: "TEKTON 1/2 Inch Drive x 3 Inch Impact Extension | SIA21103"
brand: "tekton"
price: "€ 33.68"
currency: EUR
in_stock: true
category: "Tekton"
url: https://www.desertcart.hr/products/394498467-tekton-1-2-inch-drive-x-3-inch-impact-extension
store_origin: HR
region: Croatia
---

# 3-inch length for hard-to-reach fasteners 6140 Cr-V steel with corrosion-resistant finish 1/2 inch drive for universal compatibility TEKTON 1/2 Inch Drive x 3 Inch Impact Extension | SIA21103

**Brand:** tekton
**Price:** € 33.68
**Availability:** ✅ In Stock

## Summary

> 🔧 Unlock hidden fasteners like a pro—reach further, grip tighter, last longer!

## Quick Answers

- **What is this?** TEKTON 1/2 Inch Drive x 3 Inch Impact Extension | SIA21103 by tekton
- **How much does it cost?** € 33.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/394498467-tekton-1-2-inch-drive-x-3-inch-impact-extension)

## Best For

- tekton enthusiasts

## Why This Product

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

## Key Features

- • **Secure Socket Lock:** Spring-loaded detent ball and four grooves prevent socket drops and ensure a rock-solid connection
- • **Customizable Engagement:** Detent pin hole offers flexible socket retention for professional-grade control
- • **Durability Meets Design:** Premium 6140 Chrome Vanadium steel with manganese phosphate finish resists corrosion and wear
- • **Extended Reach Advantage:** 3-inch extension lets you conquer tight, obstructed spaces with ease
- • **Precision Torque Delivery:** Engineered for impact drivers to break loose stubborn fasteners effortlessly

## Overview

The TEKTON 1/2 Inch Drive x 3 Inch Impact Extension (SIA21103) is a precision-engineered tool accessory designed for impact drivers. Crafted from heat-treated 6140 Chrome Vanadium steel with a corrosion-resistant manganese phosphate finish, it delivers superior strength and durability. Its 3-inch length extends your reach into tight or obstructed spaces, while the spring-loaded detent ball and four detent grooves ensure a secure, drop-resistant socket connection. Trusted by professionals and rated 4.9 stars by 447 users, this extension is a must-have for efficient, reliable fastening.

## Description

The Tekton 1/2 Inch Drive x 3 Inch Impact Extension reaches past obstructions or into tight, narrow spaces and delivers the torque needed to break loose stubborn fasteners. A spring-loaded detent ball securely latches onto sockets, preventing them from being dropped or left stuck on fasteners. Four detent grooves provide a secure connection with the drive tool and a detent pin hole allows user to choose whether to engage pin. Made from premium 6140 Cr-V steel, it is precisely heat treated for superior strength and protected by a corrosion-resistant manganese phosphate finish.

## Features

- Engineered for use with impact drivers
- Adds length to access hard-to-reach fasteners
- Spring-loaded detent ball securely latches onto sockets, preventing them from being dropped
- Four detent grooves provide a secure connection with the retaining ball of a drive tool
- Made of high-performing 6140 Cr-V steel with a protective manganese phosphate finish

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08J1NKGJF |
| ASIN  | B08J1NKGJF |
| Bit Compatibilities | 1/2 inch |
| Brand Name | TEKTON |
| Customer Reviews | 4.9 4.9 out of 5 stars (447) |
| Customer reviews | 4.9 4.9 out of 5 stars (447) |
| Date First Available  | 28 September 2020 |
| Drive Bit Shank Style | 1/2 inch |
| Drive System | Nutsetter |
| Finish Types | Corrosion-resistant Manganese,Phosphate Finish |
| Included Components | (1) TEKTON 1/2 Inch Drive x 3 Inch Impact Extension | SIA21103 |
| Item Length | 3 Inches |
| Item Type Name | Impact Accessories |
| Item Weight | 141 g |
| Item model number  | SIA21103 |
| Manufacturer | TEKTON |
| Manufacturer  | TEKTON |
| Manufacturer Part Number | SIA21103 |
| Material Type | Chrome Vanadium Steel |
| Model Number | SIA21103 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Product Dimensions  | 7.62 x 2.54 x 2.54 cm; 140.61 g |
| UPC | 020209055588 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** TEKTON
- **Finish type:** Corrosion-resistant Manganese,Phosphate Finish
- **Item length:** 3 Inches
- **Material:** Chrome Vanadium Steel
- **Number of pieces:** 1

## Images

![TEKTON 1/2 Inch Drive x 3 Inch Impact Extension | SIA21103 - Image 1](https://m.media-amazon.com/images/I/61RnTErrsfL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.hr/products/394498467-tekton-1-2-inch-drive-x-3-inch-impact-extension](https://www.desertcart.hr/products/394498467-tekton-1-2-inch-drive-x-3-inch-impact-extension)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-13*