---
product_id: 333670179
title: "BOSCH CO2135B 1-Piece 1/8 In. x 2-3/4 In. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum"
brand: "bosch"
price: "$340"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3
store_origin: MX
region: Mexico
---

# High-heat resistance for tough jobs Thick web-helix for superior stability 10x longer life with M42 Cobalt alloy BOSCH CO2135B 1-Piece 1/8 In. x 2-3/4 In. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum

**Brand:** bosch
**Price:** $340
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** BOSCH CO2135B 1-Piece 1/8 In. x 2-3/4 In. Cobalt M42 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?** $340 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3)

## 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 Stability:** Thick web-helix design ensures steady, fast material removal even in the toughest metals.
- • **Unmatched Durability:** Engineered with 8% cobalt M42 alloy for 10x longer lifespan than standard bits.
- • **Secure Grip Innovation:** Three-flat shank design guarantees superior bit retention and control during demanding applications.
- • **Versatile Metal Mastery:** Effortlessly drills stainless steel, cast iron, titanium, aluminum, and light-gauge metals.
- • **Heat-Defying Performance:** Withstands extreme temperatures without losing edge, perfect for high-heat drilling tasks.

## Overview

The BOSCH CO2135B 1/8 In. x 2-3/4 In. Cobalt M42 drill bit is crafted from an enhanced 8% cobalt alloy, delivering 10 times the durability of standard bits. Its high-heat resistance and thick web-helix design provide exceptional stability and fast material removal, making it ideal for drilling through stainless steel, cast iron, titanium, and other hard metals. Featuring a three-flat shank for superior grip, this industrial-grade bit is built to withstand the toughest professional applications.

## Description

BOSCH Cobalt M42 metal drill bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core Cobalt bits deliver 10x life vs. Standard bits, are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability. Bits that are 1/8 in. And larger feature a split point; bits 3/16 in. And larger feature a three-flat shank, for better bit grip. These Cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron, titanium and other hard or abrasive metals.

## Features

- Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
- Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
- High-heat resistant bits – withstand high-temperature applications for extended periods of time
- Thick web-helix design – provides additional stability in tough applications
- Surface-hardened tip – penetrates tough abrasive materials

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | BOSCH |
| Part number | CO2135B |
| Item Weight | 18.1 g |
| Item model number | CO2135B |
| Size | 1/8 In. X 2-3/4 In. |
| Color | Black |
| Style | Industrial |
| Finish | Titanium |
| Material | Stainless Steel Cobalt |
| Pattern | Solid |
| Shape | Rectangular |
| Power source type | Hand_powered |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Cutting Diameter | 0.13 Inches |
| Measurement System | Inch |
| Included components | (1) 1/8 In. X 2-3/4 In. Cobalt M42 Drill Bit |
| Batteries Included? | No |
| Batteries Required? | No |
| Item diameter | 0.13 Inches |

## Product Details

- **Material:** Stainless Steel Cobalt
- **Cutting diameter:** 2 Inches
- **Finish type:** Titanium
- **Shank type:** Straight
- **Cutting angle string:** 118 Degrees

## Images

![BOSCH CO2135B 1-Piece 1/8 In. x 2-3/4 In. Cobalt M42 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/41iOMW5hFCL.jpg)

## Available Options

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

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---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-19*