---
product_id: 46006807
title: "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: "AR$482093"
currency: ARS
in_stock: true
category: "Bosch"
url: https://www.desertcart.com.ar/products/46006807-co21-21-piece-assorted-set-with-included-case-cobalt-metal
store_origin: AR
region: Argentina
---

# No-skate split-point tip for precision Three-flat shank for slip-free grip Cobalt for extreme durability 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:** AR$482093
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro, Last Like a Legend

## Quick Answers

- **What is this?** 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?** AR$482093 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/46006807-co21-21-piece-assorted-set-with-included-case-cobalt-metal)

## 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

- • **Slip-Resistant Grip:** Three-flat shank design locks bits in place, eliminating frustrating slips on larger sizes.
- • **Versatile Size Range:** 21 assorted bits laser-etched for quick size ID, covering everything from delicate plastics to heavy metals.
- • **Built to Last 4X Longer:** Cobalt construction outperforms standard bits for relentless drilling in stainless steel and cast iron.
- • **Heat-Resistant Performance:** Engineered to withstand high drilling temperatures, maintaining sharpness and efficiency under pressure.
- • **Pinpoint Precision Every Time:** No-skate split-point tip ensures clean, accurate holes with zero wandering—perfect for professional-grade results.

## Overview

The Bosch CO21 21-Piece Cobalt Metal Drill Bit Set delivers professional-grade durability and precision with cobalt alloy 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 plastics.

## 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"

## 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 | #9,444 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Jobber Drill Bits |
| Brand Name | Bosch |
| Customer Reviews | 4.7 4.7 out of 5 stars (8,066) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.5 Inches |
| Finish Types | Titanium |
| Global Trade Identification Number | 00000346471540 |
| Included Components | Bit Sizes: (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" |
| Item Dimensions | 4.6 x 9 x 1.5 inches |
| Item Type Name | CO21 Cobalt Metal Drill Bit Set (21 Piece) |
| Item Weight | 1.1 Pounds |
| Manufacturer | Bosch |
| Material Type | Stainless Steel |
| Model | CO21 |
| Number of Flutes | 2 |
| Number of Pieces | 21 |
| Part Number | CO21 |
| Point Style | Split Point |
| 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

![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/91AEuVtQlJL.jpg)
![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/81zfVuBLV7L.jpg)
![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/51O0V5tHOfL.jpg)
![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/51qTMpy8xWL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Frequently Bought Together

- Bosch CO21 Cobalt Metal Drill Bit Set (21 Piece)
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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-07-22*