---
product_id: 66890330
title: "Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits"
brand: "bosch"
price: "AR$125645"
currency: ARS
in_stock: true
reviews_count: 8
category: "Bosch"
url: https://www.desertcart.com.ar/products/66890330-bosch-2608587521-1-4-inch-quick-change-hex-shank-extension
store_origin: AR
region: Argentina
---

# Drills 3x faster than standard spade bits 1/4" hex shank ISO 1173 E6.3 Made from specially toughened cobalt steel Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits

**Brand:** bosch
**Price:** AR$125645
**Availability:** ✅ In Stock

## Summary

> ⚡ Drill smarter, reach farther, work faster with Bosch precision!

## Quick Answers

- **What is this?** Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits by bosch
- **How much does it cost?** AR$125645 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/66890330-bosch-2608587521-1-4-inch-quick-change-hex-shank-extension)

## Best For

- bosch enthusiasts

## Why This Product

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

## Key Features

- • **Bosch Innovation Legacy:** Backed by 125 years of R&D excellence, ensuring top-tier performance every time.
- • **Engineered for Toughness:** Crafted from cobalt steel for unmatched durability in demanding jobs.
- • **Ergonomic Reach Extension:** Access hard-to-reach spots effortlessly—perfect for deep or awkward drilling.
- • **Turbocharged Drilling Speed:** Cut through wood and plasterboard 3x faster—save time, boost productivity.
- • **Precision Quick-Change Hex Shank:** Seamlessly swap bits with zero wobble for flawless drilling.

## Overview

The Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension is a precision-engineered accessory designed to enhance the performance of Self Cut Speed spade bits. Made from specially toughened cobalt steel and featuring a patented quick-change mechanism, it enables 3x faster drilling in wood and light building materials. Its ISO-standard hex shank ensures compatibility and stability, making it an essential tool for professionals seeking efficiency and durability in challenging drilling tasks.

## Description

Product Description Bosch is a leading manufacturer of accessories for power tools and is an innovation leader with 125 years of tradition. Bosch's aim is to develop innovative accessories for all applications, for more efficient working and for new materials. With more than 8000 products, Bosch offers the appropriate accessories for virtually all applications, users and all brands of power tools. Suitable for soft and hard wood, light building materials and plasterboard;Drills three times as fast as standard spade bits;Patent pending, self-feeding threaded tip and cutting geometry;Manufactured in accordance with own factory standards from specially toughened steel;Precision-ground tip and cutting edges for accurate dimensional stability when drilling;1/4" hex shank manufactured to ISO 1173 E6.3;Drill bit colour: grey, sand-blasted Box Contains 1 x Quick-change 1/4" hex shank extension for Self Cut Speed spade bits

Review: Brilliant extension piece - Brilliant extension vital bit of my Bosch armoury!
Review: Great for hard to reach jobs - ⭐️⭐️⭐️⭐️⭐️ Handy little extension – strong and super easy to use! Picked this up to use with my Bosch spade bits, and it’s been brilliant. The quick-change mechanism is smooth and holds the bits tight—no wobble, no slipping. It’s especially useful when you’re drilling in awkward spots or through deeper timber where the standard bit just won’t reach. Feels solid and well-made, like you'd expect from Bosch. Great little add-on for the toolbox. If you're using self cut spade bits, this makes the job way easier and more flexible.

## Features

- As a leading manufacturer for power tools accessories, Bosch offers the ideal accessories for virtually all applications
- It is our aim to develop appropriate accessories for more efficient working
- The research and development departments at Bosch work to develop and optimise accessories in line with the needs of users

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008HRHTCK |
| Best Sellers Rank | 78,039 in DIY & Tools ( See Top 100 in DIY & Tools ) 44 in Hex-shank Drill Bits |
| Brand | Bosch |
| Country Of Origin | Taiwan |
| Customer Reviews | 4.6 out of 5 stars 302 Reviews |
| Cutting Diameter | 6.35 Millimetres |
| Cutting diameter | 6.35 Millimetres |
| Finish Types | Silver |
| Finish type | Silver |
| Global Trade Identification Number | 03165140638838 |
| Item Dimensions | 45 x 40 x 15 centimetres |
| Item Type Name | Quick-change 1/4" hex shank extension for Self Cut Speed spade bits |
| Item Weight | 0.01 Kilograms |
| Item dimensions L x W x H | 45 x 40 x 15 centimetres |
| Manufacturer | Bosch |
| Manufacturer Part Number | 2608587521 |
| Material | Cobalt Steel |
| Model Number | 3165140638838 |
| Number of Flutes | 1 |
| Number of Pieces | 1 |
| Shank Type | HEX |
| Shank type | HEX |
| Surface Recommendation | Wood |
| Tool Flute Type | Spiral |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** Bosch
- **Cutting diameter:** 6.35 Millimetres
- **Finish type:** Silver
- **Material:** Cobalt Steel
- **Shank type:** HEX

## Images

![Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits - Image 1](https://m.media-amazon.com/images/I/415jai9AAwL.jpg)
![Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits - Image 2](https://m.media-amazon.com/images/I/21wI69lKkwL.jpg)
![Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits - Image 3](https://m.media-amazon.com/images/I/61sLb-eGihL.jpg)
![Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits - Image 4](https://m.media-amazon.com/images/I/61ke4vm5v6L.jpg)
![Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits - Image 5](https://m.media-amazon.com/images/I/51fcmHlb39L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant extension piece
*by R***T on 1 March 2026*

Brilliant extension vital bit of my Bosch armoury!

### ⭐⭐⭐⭐⭐ Great for hard to reach jobs
*by B***Y on 13 October 2025*

⭐️⭐️⭐️⭐️⭐️ Handy little extension – strong and super easy to use! Picked this up to use with my Bosch spade bits, and it’s been brilliant. The quick-change mechanism is smooth and holds the bits tight—no wobble, no slipping. It’s especially useful when you’re drilling in awkward spots or through deeper timber where the standard bit just won’t reach. Feels solid and well-made, like you'd expect from Bosch. Great little add-on for the toolbox. If you're using self cut spade bits, this makes the job way easier and more flexible.

### ⭐⭐⭐⭐⭐ Solid, durable extension – no twisting under load and secure bit locking
*by J***E on 6 April 2026*

Pricey for what it is, but the build quality definitely justifies it. I’ve been using this extension for around a year now, mainly with larger spade bits, and it’s held up really well. There are no signs of warping or twisting, which is something I’ve experienced with cheaper extensions when putting them under load. The locking mechanism is solid and reliable. The bits click firmly into place, similar to an impact driver chuck, and I’ve not had a single spade bit come loose during normal use. That alone makes a big difference when you’re drilling repeatedly or overhead. One thing to note, this applies to most extension bits, not just this one, if you’re using smaller spade bits (around 16–20mm), you can occasionally run into an issue when pulling out of a hole packed with wood chips. The resistance can cause the sliding lock to release, leaving the spade bit stuck in the hole. To avoid this, either clear the hole regularly while drilling, or wrap some electrical tape around the sliding lock to keep it from moving It’s not a dealbreaker, and like I said, it’s something I’ve seen across multiple brands, not specific to this one. Overall, it’s a simple bit of kit, but if you regularly use spade bits, especially larger sizes it’s well worth spending a bit extra on something that won’t let you down.

## Frequently Bought Together

- Bosch 2608587521 1/4-Inch Quick Change Hex Shank Extension for Self Cut Speed Spade Bits
- Bosch 13x EXPERT Self Cut Speed Spade Drill Bit Set (for Softwood, Particleboard, Ø 10-32 mm, Professional Accessory Rotary Drill/Drivers)

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**Shop now:** [https://www.desertcart.com.ar/products/66890330-bosch-2608587521-1-4-inch-quick-change-hex-shank-extension](https://www.desertcart.com.ar/products/66890330-bosch-2608587521-1-4-inch-quick-change-hex-shank-extension)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-22*