--- product_id: 507607194 title: "Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood" brand: "stroton" price: "£28.97" currency: GBP in_stock: true category: "Stroton" url: https://www.desertcart.co.uk/products/507607194-cobalt-drill-bit-set-1-16-1-4-inch-13pcs store_origin: GB region: United Kingdom --- # 3X heat & wear resistance for heavy-duty use 5% pure cobalt steel for max durability 13 precision sizes for versatile drilling Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood **Brand:** stroton **Price:** £28.97 **Availability:** ✅ In Stock ## Summary > ⚡ Drill Like a Pro, Last Like a Legend! ## Quick Answers - **What is this?** Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood by stroton - **How much does it cost?** £28.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/507607194-cobalt-drill-bit-set-1-16-1-4-inch-13pcs) ## Best For - stroton enthusiasts ## Why This Product - Trusted stroton brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Durability:** Crafted from genuine 5% cobalt ore for 3X longer tool life and superior heat resistance. - • **Precision Split Point:** Starts drilling instantly with zero walking—perfect for stainless steel and hard metals. - • **Versatile 13-Piece Set:** From 1/16 to 1/4 inch in 1/64 increments, tailored for every professional project. - • **Efficient & Cost-Effective:** Runs 3X faster than standard bits, reducing your drilling time and cost per hole. - • **Industrial-Grade Performance:** Sharp edges cut through hardened metals, hardwood, and plastics with ease. ## Overview The STROTON Cobalt Drill Bit Set features 13 industrial-grade M35 high-speed steel bits with 5% pure cobalt, delivering 3X heat, wear, and chip resistance. Designed with a split point tip for precision and reduced walking, this set excels at drilling stainless steel, cast iron, hardwood, and plastics. Engineered for professionals demanding speed, durability, and versatility in every hole. ## Description Product Advantages: (1) Split Point Design Tip starts drilling immediately with less force and eliminates "walking" across the work surface. (2) Holds up better than generic high-speed steel,Cobalt gives high-speed steel more heat and wear resistance. (3) This drill bits set is made of Premium Cobalt (80,000 dollars per ton).(4) The M35 5% cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, although they can be used for softer materials such as Aluminum,Plastic. Some Important Tips about drilling stainless steel and hard metal: (1)Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel. ________________________________ Stainless Steel ____________________________ Drill diameter RPM ____________________________ ≤3/16 1000~700 ____________________________ 3/16-3/8 700~350 ____________________________ 3/8-1/2 350~200 ________________________________ (2)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and forming a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you don't have engine oil. ## Features - 【Premium True 5% Cobalt Steel with 68 HRC】- The Marked Cobalt Content of Ordinary Drill Bits May be False, but This Drill Bits Set is Made of Cobalt Ore from Our Own Mine, Which Indeed Contains 5% Cobalt. Although the Cost and Price are Slightly Higher, It Usually is able to Provide 3X Heat,Wear and Chip Resistance and 3X Tool Life. - 【Split Point Design and Fully Ground Process】- Compared with Other Ordinary Drill Bits, This Drill Bits Set is Particularly Suitable for Heavy Duty Work, Such as Cutting through Stainless Steel,Steel Plate,Iron Sheet, Cast Iron and Hardwood, and Drilling Out Bolts Studs and Screws. - 【3X Efficiency + 3X Tool Life】- This Cobalt High Speed Steel Drill Bits Set is Typically Capable of Running 3 Times Faster. Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes. - 【Sharp Drill Bit Edge】- This Kind of Drill Bits Beast Can Even Cut Hardened Metal into Long Iron Bars, While a Dull Drill Bit Can Just Slowly Wear Through Metal. - 【13 Pieces Jobber Length Industrial Drill Bits Includes】:1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4 [DIA 1/64 Inch Increments] ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BNCKB8DR | | ASIN | B0BNCKB8DR | | Best Sellers Rank | #227,324 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #989 in Power Drill Bit Sets | | Brand Name | STROTON | | Customer Reviews | 4.4 4.4 out of 5 stars (920) | | Customer reviews | 4.4 4.4 out of 5 stars (920) | | Cutting Angle String | 135 Degrees | | Date First Available | 2 December 2022 | | Finish Types | Hardened | | Included Components | Cobalt Drill Bits and Case | | Item Dimensions | 17.8 x 7.6 x 1.8 centimeters | | Item model number | M35-Co5-inch-S | | Manufacturer | STROTON Ltd | | Manufacturer | STROTON Ltd | | Material Type | Cobalt Cobalt Steel | | Model | M35-Co5-inch-S | | Number of Pieces | 13 | | Part Number | M35-Co5-inch-S | | Point Style | Split Point | | Product Dimensions | 17.78 x 7.62 x 1.75 cm; 140 g | | Set Name | 13pcs | | Shank Type | 3-Flat | | Surface Recommendation | Cutting Stainless Steel, Cast Iron, Copper,Aluminum, Plastic, Hardwood | | Tool Flute Type | Spiral | | UPC | 630808641718 | | Unit Count | 1 Count | ## Product Details - **Brand:** STROTON - **Cutting angle string:** 135 Degrees - **Finish type:** Hardened - **Material:** Cobalt Cobalt Steel - **Shank type:** 3-Flat ## Images ![Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 1](https://m.media-amazon.com/images/I/71dpcqd-McL.jpg) ![Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 2](https://m.media-amazon.com/images/I/715fKRNQWjL.jpg) ![Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 3](https://m.media-amazon.com/images/I/71CT+PUii3L.jpg) ![Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 4](https://m.media-amazon.com/images/I/71rPwB55ZzL.jpg) ![Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 5](https://m.media-amazon.com/images/I/61GIQBqvDtL.jpg) ## Frequently Bought Together - STROTON Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size - NordWolf 5-Piece M35 Cobalt Stubby Drill Bit Set for Stainless Steel & Hard Metals, with 1/4" Hex Shank for Quick Chucks & Impact Drivers, SAE Sizes 3/32"-1/8"-3/16"-1/4"-5/16" in Storage Case --- ## 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.co.uk/products/507607194-cobalt-drill-bit-set-1-16-1-4-inch-13pcs](https://www.desertcart.co.uk/products/507607194-cobalt-drill-bit-set-1-16-1-4-inch-13pcs) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-08*