--- 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: "€ 59.27" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.sk/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3 store_origin: SK region: Slovakia --- # 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:** € 59.27 **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?** € 59.27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/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. Review: El funcionamiento de esta broca es muy bueno, se pueden hacer fácilmente perforaciones al metal Review: Quality material. ## 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 | |---------------|-------| | ASIN | B07Q9X37RL | | ASIN | B07Q9X37RL | | Best Sellers Rank | #52,168 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Jobber Drill Bits | | Brand Name | BOSCH | | Customer Reviews | 4.6 4.6 out of 5 stars (6,676) | | Customer reviews | 4.6 4.6 out of 5 stars (6,676) | | Cutting Angle String | 118 Degrees | | Cutting Diameter | 2 Inches | | Date First Available | 8 December 2019 | | Finish Types | Titanium | | Global Trade Identification Number | 00000346594485 | | Included Components | (1) 1/8 In. X 2-3/4 In. Cobalt M42 Drill Bit | | Item Dimensions | 7 x 4.4 x 14.7 centimeters | | Item Type Name | Bosch CO2135B 1/8 In. X 2-3/4 In. Cobalt M42 Drill Bit | | Item Weight | 0.04 Pounds | | Item model number | CO2135B | | Manufacturer | BOSCH | | Manufacturer | BOSCH | | Material Type | Stainless Steel Cobalt | | Minimum Bore Diameter | 0.13 Inches | | Model | CO2135B | | Number of Flutes | 2 | | Number of Pieces | 1 | | Part Number | CO2135B | | Point Style | Split Point | | Product Dimensions | 6.99 x 4.45 x 14.71 cm; 18.14 g | | Shank Type | Straight | | Surface Recommendation | Metal | | Tool Flute Type | Parabolic | | UPC | 000346594485 | | Unit Count | 1 Count | | Warranty Description | Product Defects Only | ## Product Details - **Cutting angle string:** 118 Degrees - **Cutting diameter:** 2 Inches - **Finish type:** Titanium - **Material:** Stainless Steel Cobalt - **Shank type:** Straight ## 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) ![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 2](https://m.media-amazon.com/images/I/51MCFlfVnCL.jpg) ![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 3](https://m.media-amazon.com/images/I/519O0yvOYGL.jpg) ![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 4](https://m.media-amazon.com/images/I/61S9mIoIDPL.jpg) ![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 5](https://m.media-amazon.com/images/I/61ZQB21ae6L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐ Review *by C***O on 14 December 2021* El funcionamiento de esta broca es muy bueno, se pueden hacer fácilmente perforaciones al metal ### ⭐⭐⭐⭐⭐ Review *by W***S on 31 January 2026* Quality material. ### ⭐⭐⭐⭐⭐ Review *by M***H on 17 January 2026* Was soll Ma da sagen Bosch expert halt Qualität einfach fantastisch 🤩 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3](https://www.desertcart.sk/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-11*