---
product_id: 46006807
title: "BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum"
brand: "bosch"
price: "RM1126"
currency: MYR
in_stock: false
reviews_count: 13
category: "Bosch"
url: https://www.desertcart.com.my/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt
store_origin: MY
region: Malaysia
---

# No-skate split-point tip for precision Three-flat shank for slip-free grip Cobalt for extreme durability BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum

**Brand:** bosch
**Price:** RM1126
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Drill like a pro, last like a legend.

## Quick Answers

- **What is this?** BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum by bosch
- **How much does it cost?** RM1126 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt)

## 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

- • **Precision Perfected:** Split-point tip ensures clean, accurate holes every time.
- • **Grip That Won't Quit:** Three-flat shank design locks in place, no slipping under pressure.
- • **Versatility Unleashed:** 21 assorted sizes laser-etched for quick selection across metals, wood, and plastic.
- • **Engineered for Endurance:** 4X longer life than standard bits—drill harder, longer.
- • **Heat-Resistant Powerhouse:** Built to withstand high drilling temperatures in stainless steel and cast iron.

## Overview

The Bosch CO21 21-Piece Cobalt Metal Drill Bit Set delivers professional-grade durability and precision with cobalt construction, a no-skate split-point tip, and a three-flat shank design. Engineered for tough materials like stainless steel, cast iron, and titanium, this set offers 4X longer life than standard bits and includes 21 laser-etched sizes for versatile, slip-free drilling across metals, wood, and plastic.

## Description

Bosch Cobalt metal drill bits provide 4x longer life than standard high-speed steel drill bits, plus they provide outstanding performance in stainless steel. These have been engineered for contractors and other pros who need solid, reliable bits for demanding drilling applications in stainless, cast iron, and high-density metal. These bits also are useful for general-application drilling in high-carbon steel and light-gauge metal, as well as wood and plastic. The split-point tip has been engineered for no-skate starts and clean, accurate holes. The three-flat shank design on bits 3/16 in. And larger promotes better gripping and guards against slipping.Includes bits: (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2"

Review: Great product at a great price ! - Great for hard metals, excellent product.
Review: German Quality - Superior to Milwaukee, used to drill stainless first bit lasted 8 holes. Milwaukee was trash over 2

## Features

- TOUGH: The Bosch CO21 Drill Bit Set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, cast iron, and high-density metal. Also useful for general drilling in light-gauge metal, wood, and plastic.
- ACCURACY: Featuring a no-skate split-point tip for clean, precise holes and accurate starts.
- RELIABLE: The three-flat shank design promotes better grip and guards against slipping on bits 3/16 in. and larger
- PERFORMANCE: Designed for very high drilling temperatures for superior performance in stainless steel. Bosch Cobalt Metal Drill Bits are solid, reliable, and provide 4X longer life than standard high-speed drill bits.
- VERSATILITY: Includes laser-etched marking to provide clearly marked bit diameter. Included bit sizes: 1/16 in., 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in.,11/64 in., 3/16 in., 13/64 in., 7/32 in., 15/64 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XY7W87H |
| Best Sellers Rank | #56,825 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #166 in Jobber Drill Bits |
| Brand | Bosch |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.5 Inches |
| Date First Available | March 30, 2017 |
| Finish Type | Titanium |
| Global Trade Identification Number | 00000346471540 |
| Item Weight | 1.1 pounds |
| Item dimensions L x W x H | 4.6 x 9 x 1.5 inches |
| Item model number | CO21 |
| Manufacturer | Bosch |
| Material | Stainless Steel |
| Number of Flutes | 2 |
| Number of Pieces | 21 |
| Point Style | Split Point |
| Product Dimensions | 4.6 x 9 x 1.5 inches |
| Set Name | 21-Piece Assorted Set |
| Shank Type | 3-Flat |
| Surface Recommendation | Cast Iron,Metal,Plastic,Stainless,Stainless Steel,Steel,Wood |
| Tool Flute Type | Spiral |
| UPC | 000346471540 |
| Unit Count | 1.0 Count |

## Product Details

- **Cutting Angle String:** 135 Degrees
- **Cutting Diameter:** 0.5 Inches
- **Finish Type:** Titanium
- **Material:** Stainless Steel
- **Shank Type:** 3-Flat

## Images

![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum - Image 1](https://m.media-amazon.com/images/I/41VGnisS1iL.jpg)
![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum - Image 2](https://m.media-amazon.com/images/I/41XLClXL1mL.jpg)
![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum - Image 3](https://m.media-amazon.com/images/I/51-bj00YN-L.jpg)
![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum - Image 4](https://m.media-amazon.com/images/I/51CFqJw9ocL.jpg)
![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum - Image 5](https://m.media-amazon.com/images/I/51O0V5tHOfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product at a great price !
*by W***M on August 28, 2025*

Great for hard metals, excellent product.

### ⭐⭐⭐⭐⭐ German Quality
*by J***D on October 5, 2025*

Superior to Milwaukee, used to drill stainless first bit lasted 8 holes. Milwaukee was trash over 2

### ⭐⭐⭐⭐⭐ Works great
*by S***R on December 15, 2025*

Works great

## Frequently Bought Together

- Bosch CO21 Cobalt Metal Drill Bit Set (21 Piece)
- Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz
- BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-01-23*