---
product_id: 145184278
title: "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"
price: "€ 75.29"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/145184278-bosch-co14b-14-piece-assorted-set-with-included-case-cobalt
store_origin: DE
region: Germany
---

# High-heat resistance for tough jobs Three-flat shank for superior grip 8% Cobalt M42 Alloy - 10x durability 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

**Price:** € 75.29
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro, Last Like a Legend!

## Quick Answers

- **What is this?** 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
- **How much does it cost?** € 75.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/145184278-bosch-co14b-14-piece-assorted-set-with-included-case-cobalt)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Organized On-the-Go:** Includes 14 essential sizes in a sleek case with three-flat shank bits for better grip and control.
- • **Precision Stability:** Thick web-helix design and split point tip ensure fast, stable drilling in stainless steel and hard metals.
- • **Unmatched Durability:** Engineered with 8% cobalt M42 alloy for 10x longer life than standard bits.
- • **Versatile Metal Mastery:** Perfect for stainless steel, cast iron, titanium, aluminum, and light-gauge metals.
- • **Heat-Resistant Performance:** Withstands extreme temperatures, keeping sharpness in high-heat drilling applications.

## Overview

The BOSCH CO14B 14-piece drill bit set features premium M42 cobalt alloy bits with 8% cobalt content, delivering 10 times the lifespan of standard bits. Designed for high-heat resistance and enhanced stability with a thick web-helix and split point tips, these bits excel in drilling stainless steel, cast iron, titanium, and other tough metals. The set includes a variety of sizes with three-flat shanks for superior grip, all housed in a durable case for easy transport and organization.

## 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.

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: 100% worth the cost - 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!

## 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
- Includes – 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Cobalt |
| Cutting Diameter | 0.5 Inches |
| Finish Type | Titanium |
| Shank Type | 3-Flat |
| Cutting Angle String | 135 Degrees |
| Brand | Bosch |
| Tool Flute Type | Spiral |
| Point Style | Split Point |
| Surface Recommendation | Cast Iron,Metal,Metals,Stainless Steel |
| Number of Flutes | 3 |
| UPC | 000346594591 |
| Set Name | 14-Piece Cobalt M42 Metal Drill Bit Set |
| Unit Count | 14.0 Count |
| Global Trade Identification Number | 00000346594591 |
| Manufacturer | BOSCH |
| Number of Pieces | 14 |
| Part Number | CO14B |
| Item Weight | 1 pounds |
| Item model number | CO14B |
| Size | 14-Piece Drill Bit Set |
| Color | Solid Black |
| Style | Classic |
| Finish | Titanium |
| Pattern | Solid |
| Shape | Rectangular |
| Power Source | Hand_powered |
| Item Package Quantity | 1 |
| Measurement System | Inch |
| Included Components | 14 Drill Bits; Case |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Product Defects Only |

## Product Details

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

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/81Nu8e18JaL.jpg)

## Available Options

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

## Questions & Answers

**Q: Length of the bits for each diameter?**
A: "Hi there, please see the following model with diameter and length size of the bits that comes in CO14B;
CO2131 - 1/16"" - 1.875""
CO2132 -  5/64"" - 2.0""
CO2133 - 3/32"" - 2.5""
CO2134 - 7/64"" - 2.625""
CO2135 - 1/8"" - 2.75""
CO2136 - 9/64"" - 2.875""
CO2137 - 5/32"" - 3.125""
CO2139B - 3/16"" - 3.5""
CO4141 -  7/32"" - 3.75""
CO2145 - 1/4"" - 4.5""
CO2147 - 5/16""  - 4.5""
CO2151 - 3/8"" - 5.0""
CO2159  1/2"" - 6.0""
For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST."

**Q: Where is the 5/64" individual bit? (The only one I need to replace, of course!)**
A: You always have to order any single bit or bit replacement separately, unless you can convince the company otherwise.

**Q: Does Bosch make a metric set????**
A: This COB14B Drill bit set is at a standard or imperial measurement. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

**Q: Do either of the sets come with a bit holder? If not, what size bit holder would work?**
A: The CO14B set doesn't come with a bit holder. The bits will work with drills that caters straight shank bits and three-flat shank bits. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7AM-7PM CST.

## 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.

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐⭐ Great bit set!
*by L***. on August 7, 2025*

This is a great drill bit set. The reason I purchased this set is because I needed to drill and tap a hole in the end of a lawnmower engine crankshaft. Rather than buying just that drill bit I decided to get a whole set, because I knew I would need drill bits again. I decided to go with this set over others because it is 8% cobalt whereas most others are only 5%, and this one includes a 1/2" bit and most others don't. These work amazing! Drilling the crankshaft was a breeze. I put some oil on it, and it practically screwed into the metal. I have since then drilled many holes through aluminum and wood, and they just go right through. These bits are plenty long for what I need. If I ever need to replace these bits, I will be getting more of the same. It was money well spent.

## Frequently Bought Together

- 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
- Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size
- Lubri-Cut Cutting Paste for Drilling Metal - 2 Oz Tub - Made in USA | Beeswax Oil for Metal | High Performance Tapping & Cutting Wax | Saw Blade Lubricant & Drill Fluid

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-28*