---
product_id: 722611124
title: "BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2)"
brand: "bosch"
price: "C$1004"
currency: NIO
in_stock: true
reviews_count: 11
category: "Bosch"
url: https://www.desertcart.ni/products/722611124-bosch-co2133b-3-32-in-x-2-1-4-in
store_origin: NI
region: Nicaragua
---

# 10x longer life with 8% cobalt alloy High heat resistance for tough metals Thick web-helix for superior stability BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2)

**Brand:** bosch
**Price:** C$1004
**Availability:** ✅ In Stock

## Summary

> 🛠️ Drill Like a Pro, Last Like a Legend

## Quick Answers

- **What is this?** BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) by bosch
- **How much does it cost?** C$1004 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/722611124-bosch-co2133b-3-32-in-x-2-1-4-in)

## 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, accurate drilling even in the toughest metals—no wobble, no hassle.
- • **Pro-Grade Sharpness:** Surface-hardened tips slice through abrasive materials cleanly, delivering flawless results every time.
- • **Unmatched Durability:** Engineered with premium M42 cobalt alloy to outlast standard bits by 10x, keeping you ahead on every project.
- • **Versatile Metal Mastery:** Perfectly crafted to penetrate stainless steel, cast iron, titanium, aluminum, and more with ease.
- • **Heat-Defying Performance:** Built to withstand extreme temperatures, these bits maintain sharpness and efficiency under pressure.

## Overview

The BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit pack features two high-performance bits made from 8% cobalt alloy, offering 10 times the lifespan of standard bits. Designed with a thick web-helix for enhanced stability and a surface-hardened tip for superior penetration, these bits excel in drilling through stainless steel, cast iron, titanium, and aluminum while resisting high heat for extended use.

## Description

BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - desertcart.com

Review: Best bits for drilling metal I have ever used - I bought the 14-piece cobalt set (upgrade over the Bosch titanium sets) almost two years ago (Jan 2024). I have been impressed enough with their performance to feel compelled to come back and review them, as well as buy a larger set (21-piece cobalt, which has a few sizes and duplicates that the 14-piece set doesn't include). In addition to occasional use of various sizes over the last two years on wood, PVC pipe, and aluminum, I used two of the bits in a single project to drill over a hundred holes in mild steel angle iron and rectangular tubing. I used a drill press, set up at a slower speed, along with plenty of cutting oil (sometimes reapplying midway through drilling a hole). In line with other bits I've used in the past, I expected the two bits I was repeatedly using to dull to the point of uselessness part-way through the project. Much to my surprise, both bits survived and still cut practically like they are new. Bottom line, if you are using these bits to drill into mild steel with a drill press set at a slower speed and generous application of cutting oil, these bits are a fantastic choice. I have also used these bits to drill into aluminum, PVC pipe, and woods of various hardnesses with absolutely no issues. Highly recommend any of the Bosch M42 cobalt bits.
Review: Great Quality - Great results in use. - High Quality - never had a cobalt set before but from using this set i've been highly impressed. These stay sharp longer and provide a better cut compared to standard high volume big-box store brands like Dewalt.

## Features

- The information below is per-pack only
- 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 |
|---------------|-------|
| ASIN | B0CHMPJN94 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,971 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Jobber Drill Bits |
| Brand | Bosch |
| Color | Multi |
| Customer Reviews | 4.7 4.7 out of 5 stars (6,846) |
| Date First Available | January 13, 2026 |
| Finish | Titanium |
| Finish Type | Titanium |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.634 ounces |
| Item dimensions L x W x H | 2.24 x 0.08 x 0.08 inches |
| Item model number | CO2133B |
| Manufacturer | BOSCH |
| Material | Cobalt Steel |
| Number of Flutes | 1 |
| Number of Pieces | 2 |
| Part Number | CO2133B |
| Pattern | Solid |
| Point Style | Center Point |
| Product Dimensions | 2.24 x 0.08 x 0.08 inches |
| Shank Type | Straight |
| Size | 3/32 x 2-1/4 in. (Pack of 2) |
| Style | Classic |
| Surface Recommendation | Aluminum, Metal, Stainless Steel, Cast Iron |
| Tool Flute Type | Spiral |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** Bosch
- **Finish Type:** Titanium
- **Item dimensions L x W x H:** 2.24 x 0.08 x 0.08 inches
- **Material:** Cobalt Steel
- **Shank Type:** Straight

## Images

![BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/51FRqSK2HtL.jpg)
![BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - Image 2](https://m.media-amazon.com/images/I/717nnLr2I+L.jpg)
![BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - Image 3](https://m.media-amazon.com/images/I/511EGCQiKlL.jpg)
![BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - Image 4](https://m.media-amazon.com/images/I/71IV2tYa5lL.jpg)
![BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2) - Image 5](https://m.media-amazon.com/images/I/81kS1Q7tB5L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best bits for drilling metal I have ever used
*by J***R on November 30, 2025*

I bought the 14-piece cobalt set (upgrade over the Bosch titanium sets) almost two years ago (Jan 2024). I have been impressed enough with their performance to feel compelled to come back and review them, as well as buy a larger set (21-piece cobalt, which has a few sizes and duplicates that the 14-piece set doesn't include). In addition to occasional use of various sizes over the last two years on wood, PVC pipe, and aluminum, I used two of the bits in a single project to drill over a hundred holes in mild steel angle iron and rectangular tubing. I used a drill press, set up at a slower speed, along with plenty of cutting oil (sometimes reapplying midway through drilling a hole). In line with other bits I've used in the past, I expected the two bits I was repeatedly using to dull to the point of uselessness part-way through the project. Much to my surprise, both bits survived and still cut practically like they are new. Bottom line, if you are using these bits to drill into mild steel with a drill press set at a slower speed and generous application of cutting oil, these bits are a fantastic choice. I have also used these bits to drill into aluminum, PVC pipe, and woods of various hardnesses with absolutely no issues. Highly recommend any of the Bosch M42 cobalt bits.

### ⭐⭐⭐⭐⭐ Great Quality - Great results in use.
*by T***2 on January 18, 2026*

High Quality - never had a cobalt set before but from using this set i've been highly impressed. These stay sharp longer and provide a better cut compared to standard high volume big-box store brands like Dewalt.

### ⭐⭐⭐⭐⭐ 100% worth the cost
*by J***M on November 23, 2024*

Anything bosch makes is good, but i feel like they have it down pat when it comes to stuff like twist drills and bits. The M42 cobalt keeps the drill from getting too hot and also acts as a "lubricant", both contributing to keeping a sharp cutting edge, giving it quality and ease of use. These factors reduce the need for either resharpening, or worst, replacing the drill. The cost of cobalt bits are what scares people away, but if you're gonna be using it more than 2 or 3 times, its worth the upgrade from black oxide or a coated bit, thus giving it great value for money. The "M42" is a reference for the amount of cobalt used in the "material makeup" of the bit, with 8% cobalt being used in M42, and 5% cobalt in M35. Both are great options, but i recommend getting an M42 version when possible. The use of cobalt doesnt change the size or shape of the drill, although some will have different flute counts and designs, some tips have a "no pilot hole" start and some will have different degrees of an angle at the head to help with different types of material. Overall, storage capacity will not change unless you opt for different lengths, such as mechanics and aviation length. To sum this up, this is a great drill that should last a long time if used correctly. Bosch is very prevalent in my drill cabinet, so dont be afraid to spend a little extra and get the good one!

## Frequently Bought Together

- BOSCH CO2133B 3/32 in. x 2-1/4 in. Cobalt M42 Drill Bit (Pack of 2)
- DEWALT DWA1207 7/64" Pilot Point Industrial Cobalt Alloy Steel Drill Bit
- BOSCH CO2136 1-Piece 9/64 in. x 2-7/8 in. Cobalt Metal Drill Bit for Drilling Applications in Light-Gauge Metal, High-Carbon Steel, Aluminum and Ally Steel, Cast Iron, Stainless Steel, Titanium

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-04*