--- product_id: 139056833 title: "40-Piece M35 Cobalt Steel Twist Drill Bit Set, Sizes 3/64\", 1/16\", 5/64\", 3/32\" (10 Each), Fully Ground HSS-CO Jobber Bits with 118° Point for Stainless Steel, Hard Metal, Cast Iron & Wood" brand: "hymnorq" price: "770766₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/139056833-40-piece-m35-cobalt-steel-twist-drill-bit-set-sizes store_origin: VN region: Vietnam --- # Heat Resistant M35 Cobalt Steel 135° Split Point 40-Piece M35 Cobalt Steel Twist Drill Bit Set, Sizes 3/64", 1/16", 5/64", 3/32" (10 Each), Fully Ground HSS-CO Jobber Bits with 118° Point for Stainless Steel, Hard Metal, Cast Iron & Wood **Brand:** hymnorq **Price:** 770766₫ **Availability:** ✅ In Stock ## Summary > 🔧 Drill Like a Pro with Unmatched Precision! ## Quick Answers - **What is this?** 40-Piece M35 Cobalt Steel Twist Drill Bit Set, Sizes 3/64", 1/16", 5/64", 3/32" (10 Each), Fully Ground HSS-CO Jobber Bits with 118° Point for Stainless Steel, Hard Metal, Cast Iron & Wood by hymnorq - **How much does it cost?** 770766₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/139056833-40-piece-m35-cobalt-steel-twist-drill-bit-set-sizes) ## Best For - hymnorq enthusiasts ## Why This Product - Trusted hymnorq brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Metal Mastery:** Designed specifically for cutting through tough metals like stainless steel and cast iron, making them a must-have for metalworking pros. - • **User-Friendly Guide:** Comes with a downloadable user guide featuring RPM charts and drilling tips to enhance your drilling experience. - • **Unmatched Durability:** Crafted from M35 cobalt steel, these bits boast a Rockwell hardness of up to 67, ensuring they outlast standard HSS bits by up to 12 times. - • **Versatile Size Range:** Includes 40 precision bits in four essential sizes (3/64, 1/16, 5/64, 3/32) to tackle any project with ease. - • **Precision Engineering:** Manufactured to German DIN338 standards, ensuring top-notch quality and performance in every bit. ## Overview The HYMNORQ40PC M35 Cobalt Steel Twist Jobber Small Drill Bits set includes 40 high-performance bits designed for metalworking, featuring a Rockwell hardness of up to 67 for exceptional durability. With sizes ranging from 3/64 to 3/32 inches, these bits are perfect for cutting through tough materials like stainless steel and cast iron. Each set comes with a user guide for optimal drilling results. ## Description Hymnorq 40-Piece M35 Cobalt Twist Drill Bit Set – 3/64", 1/16", 5/64", 3/32" – Fully Ground Dual Flute, 118° Chisel Point, Bronze Finish, Straight Shank, Packed in PP Bags ## Features - COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to create a hardened heat-resistant alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times compared with an average HSS drill bit. - 40PC FRACTIONAL INCH BITS - The set includes 40pcs of M35 cobalt steel twist drill bits, 3/64" x 10pcs, 1/16" x 10pcs, 5/64" x 10pcs, and 3/32" x 10pcs. Manufactured to German DIN338 standard. Packed in a plastic bag. - FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate. - DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download. - LENGTH OF THE BITS: 3/64(1.73"), 1/16(1.89"), 5/64(2.01"), 3/32(2.24"). ## Images ![40-Piece M35 Cobalt Steel Twist Drill Bit Set, Sizes 3/64", 1/16", 5/64", 3/32" (10 Each), Fully Ground HSS-CO Jobber Bits with 118° Point for Stainless Steel, Hard Metal, Cast Iron & Wood - Image 1](https://m.media-amazon.com/images/I/71IuataF0WL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Are most of these reviews fake? 50 real cobalt bits for $15 is impossible.** A: We swear every review in our store is real. Our living relies on this account. We'll never risk making fake reviews, or it might be closed by Amazon. Pay attention to the size. These bits are small. The 1mm is like a needle. You guys paid extra too much for those famous brands before. Selling it at $15 is profitable for us. **Q: is the drill bits pure cobalt?** A: Thanks for your question. Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with 5 to 8 percent cobalt. The 5-percent alloy is known as M35 grade, and the 8-percent alloy is M42. These bits are made of M35 grade cobalt steel, with 5% cobalt added. **Q: I want to drill 9 to 12 holes through large, stainless steel hinges (3mm thick).Could I do the job with these drills?** A: Quality of hinge is the variable here. I would buy a single cheap coated drill bit first. If you can drill one hole with the cheap bit, then you should be able to drill 9-12 in the same material with this set. As always use cutting oil and make sure your press is set to proper speed. **Q: What size is the shank on these?** A: Size of the shank is the same as the size of the drill. --- ## 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.vn/products/139056833-40-piece-m35-cobalt-steel-twist-drill-bit-set-sizes](https://www.desertcart.vn/products/139056833-40-piece-m35-cobalt-steel-twist-drill-bit-set-sizes) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*