--- product_id: 46006807 title: "BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum" brand: "bosch" price: "24675 kr" currency: ISK in_stock: true category: "Bosch" url: https://www.desertcart.is/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt store_origin: IS region: Iceland --- # 135° no-skate split-point tip 3-flat shank anti-slip grip 4X longer life cobalt steel BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum **Brand:** bosch **Price:** 24675 kr **Availability:** ✅ In Stock ## Summary > 🔧 Drill Like a Pro, Last Like a Legend ## Quick Answers - **What is this?** BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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?** 24675 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt) ## 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 - • **Slip-Free Control:** Three-flat shank design locks in your drill chuck, eliminating slippage on bits 3/16" and larger for confident handling. - • **Precision Perfected:** 135° split-point tip ensures no-skate starts and razor-sharp accuracy for flawless holes every time. - • **Unmatched Durability:** Engineered from premium cobalt for 4X longer lifespan than standard bits—built to outlast your toughest projects. - • **Versatile Size Range:** 21 assorted bits from 1/16" to 1/2" with laser-etched markings—ready for everything from delicate woodwork to heavy-duty metals. - • **Heat-Resistant Performance:** Optimized for high-temperature drilling in stainless steel, cast iron, titanium, and more—delivering consistent power under pressure. ## Overview The Bosch CO21 21-piece cobalt metal drill bit set offers professional-grade durability and precision with a 135° split-point tip and three-flat shank design. Engineered for high-temperature drilling in stainless steel, cast iron, and other tough materials, these bits deliver 4X longer life than standard high-speed steel bits. The set includes 21 laser-etched sizes from 1/16" to 1/2", making it the ultimate versatile toolkit for contractors and serious DIYers alike. ## Description Bosch Cobalt metal drill bits provide 4x longer life than standard high-speed steel drill bits, plus they provide outstanding performance in stainless steel. These have been engineered for contractors and other pros who need solid, reliable bits for demanding drilling applications in stainless, cast iron, and high-density metal. These bits also are useful for general-application drilling in high-carbon steel and light-gauge metal, as well as wood and plastic. The split-point tip has been engineered for no-skate starts and clean, accurate holes. The three-flat shank design on bits 3/16 in. And larger promotes better gripping and guards against slipping.Includes bits: (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2" ## Features - TOUGH: The Bosch CO21 Drill Bit Set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, cast iron, and high-density metal. Also useful for general drilling in light-gauge metal, wood, and plastic. - ACCURACY: Featuring a no-skate split-point tip for clean, precise holes and accurate starts. - RELIABLE: The three-flat shank design promotes better grip and guards against slipping on bits 3/16 in. and larger - PERFORMANCE: Designed for very high drilling temperatures for superior performance in stainless steel. Bosch Cobalt Metal Drill Bits are solid, reliable, and provide 4X longer life than standard high-speed drill bits. - VERSATILITY: Includes laser-etched marking to provide clearly marked bit diameter. Included bit sizes: 1/16 in., 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in.,11/64 in., 3/16 in., 13/64 in., 7/32 in., 15/64 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XY7W87H | | Best Sellers Rank | #9,872 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Jobber Drill Bits | | Brand Name | Bosch | | Customer Reviews | 4.7 4.7 out of 5 stars (8,076) | | Cutting Angle String | 135 degrees | | Cutting Diameter | 0.5 inches | | Finish Types | Titanium | | Global Trade Identification Number | 00000346471540 | | Included Components | Bit Sizes: (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2" | | Item Dimensions | 4.6 x 9 x 1.5 inches | | Item Type Name | CO21 Cobalt Metal Drill Bit Set (21 Piece) | | Item Weight | 1.1 pounds | | Manufacturer | Bosch | | Material Type | Stainless Steel | | Model | CO21 | | Number of Flutes | 2 | | Number of Pieces | 21 | | Part Number | CO21 | | Point Style | Split Point | | Set Name | 21-Piece Assorted Set | | Shank Type | 3-Flat | | Surface Recommendation | Cast Iron,Metal,Plastic,Stainless,Stainless Steel,Steel,Wood | | Tool Flute Type | Spiral | | UPC | 000346471540 | | Unit Count | 1 Count | ## Product Details - **Cutting Angle String:** 135 degrees - **Cutting Diameter:** 0.5 inches - **Finish Type:** Titanium - **Material:** Stainless Steel - **Shank Type:** 3-Flat ## Images ![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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/51CFqJw9ocL.jpg) ![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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/51-bj00YN-L.jpg) ![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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/41XLClXL1mL.jpg) ![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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/41VGnisS1iL.jpg) ![BOSCH CO21 21-Piece Assorted Set with Included Case Cobalt 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/91AEuVtQlJL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Frequently Bought Together - Bosch CO21 Cobalt Metal Drill Bit Set (21 Piece) - Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz - 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 --- ## 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.is/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt](https://www.desertcart.is/products/46006807-bosch-co21-21-piece-assorted-set-with-included-case-cobalt) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-08-28*