--- 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: "NT$589" currency: TWD in_stock: true category: "Bosch" url: https://www.desertcart.tw/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3 store_origin: TW region: Taiwan --- # High-heat resistance for tough jobs Three-flat shank for superior grip 8% Cobalt M42 Alloy for 10x durability 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:** NT$589 **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?** NT$589 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/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 fast material removal and enhanced stability in hard metals. - • **Superior Grip Design:** Three-flat shank prevents slipping, giving you maximum control on every drill. - • **Unmatched Durability:** Engineered with 8% cobalt M42 alloy delivering 10x longer life than standard bits. - • **Versatile Metal Master:** Perfect for stainless steel, cast iron, titanium, aluminum, and other abrasive metals. - • **Heat-Resistant Powerhouse:** Withstands extreme temperatures to keep drilling performance consistent under pressure. ## Overview The BOSCH CO2135B 1/8 In. x 2-3/4 In. Cobalt M42 drill bit features an 8% cobalt alloy for 10x longer life, high-heat resistance, and a three-flat shank for superior grip. Designed for precision and durability, it excels in drilling stainless steel, cast iron, titanium, and other tough metals, making it the go-to bit for professionals demanding reliability and performance. ## 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 | |---------------|-------| | ASIN | B07Q9X37RL | | ASIN | B07Q9X37RL | | Best Sellers Rank | #57,997 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Jobber Drill Bits | | Brand Name | BOSCH | | Customer Reviews | 4.6 4.6 out of 5 stars (297) | | Customer reviews | 4.6 4.6 out of 5 stars (297) | | 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) ## Available Options This product comes in different **Size** options. --- ## 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.tw/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3](https://www.desertcart.tw/products/333670179-bosch-co2135b-1-piece-1-8-in-x-2-3) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-09-25*