--- product_id: 539591933 title: "5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index." brand: "stroton" price: "Rp2281601" currency: IDR in_stock: true reviews_count: 5 category: "Stroton" url: https://www.desertcart.id/products/539591933-5-cobalt-drill-bit-set-1-16-3-8-inch store_origin: ID region: Indonesia --- # 68 HRC hardness for heat & wear resistance 5% Cobalt Steel for 3X durability 21 precision sizes from 1/16" to 3/8" 5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. **Brand:** stroton **Price:** Rp2281601 **Availability:** ✅ In Stock ## Summary > ⚡ Drill Like a Pro, Last Like a Legend ## Quick Answers - **What is this?** 5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. by stroton - **How much does it cost?** Rp2281601 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/539591933-5-cobalt-drill-bit-set-1-16-3-8-inch) ## 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 - • **Complete Industrial Range:** 21 jobber-length bits in 1/64" increments ensure you always have the perfect size on hand. - • **Unmatched Longevity & Speed:** 5% cobalt steel boosts tool life and cuts drilling time by 3X—work smarter, not harder. - • **Precision Split Point Design:** Drill with surgical accuracy on stainless steel, hard metals, wood, and plastic without slipping. - • **Rugged Cold-Rolled Steel Case:** Durable, smooth-opening metal case keeps your bits organized and ready for any project. - • **Versatile Heavy-Duty Performance:** From broken bolts to delicate crafts, engineered for professionals and DIYers demanding reliability. ## Overview This 21-piece 5% cobalt HSS drill bit set delivers industrial-grade durability and precision with 68 HRC hardness and a split point design. Engineered for stainless steel, hard metals, wood, and plastic, it offers 3X longer life and faster drilling speeds. Packaged in a rugged cold-rolled steel case, it’s the ultimate toolkit upgrade for professionals and serious DIYers alike. ## Description Peak performance at your fingertips’ disposal. Be it a broken bolt or a full-fledged car repair, ensure success from the first minute with our plug-and-play drill bit set! With a 5% cobalt composition and metal-piercing sharpness, it will inject limitless possibilities to your home repairs and handicraft projects. Designed with sporadic use and heavy daily duty in mind, our cobalt drill bits for stainless steel possess the necessary resistance to handle any frequency of use and type of surface. Whether you need to work on hard-to-drill metal surfaces, softer metals, wood, and plastic facades, rest assured these won’t break or leave you hanging.Our cobalt drill bits for metal come in the most common industrial drill bit sizes, guaranteeing you’ll always have the right piece of equipment at an arm’s reach. Whether you’re a handicraft worker, car mechanic, or simply a home improvement enthusiast, you’ll be able to enjoy your hands-on therapy like never before and take your time to create without stress, for less, and without making a mess!21PCS cobalt drill bits set Include：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", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8". Review: Been using these to drill steel at work and I'm impressed . Haven't had any break yet and they seem to stay sharp . Nice little case as well Review: Had them for over a year and soon to buy another set. For the price I didn’t have high expectations, but it turns out these cut and hold up incredibly well. Great stuff. Don’t forget to order a bottle of tap magic ;) ## Features - 【Premium 5% Cobalt Steel with 68 HRC】 This Fully Ground Cobalt Drill Bits Set are Made with 5% Ture Cobalt. Although the Cost and Price are Slightly Higher, With a Useful Life,Heat,Wear and Chip Resistance up to 3 Times Longer than the Average Product. - 【3X Efficiency + 3X Tool Life】This Cobalt HSS 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. - 【Split Point Design with Unparalleled Precision】This Heavy Duty Work Drill Bits Kit is Suitable for Steel, Stainless Steel, Cold Rolled Steel, Hard Metals, Aluminum Alloy, Hard Wood, and Plastic, and Drilling Out Bolts Studs and Screws. - 【Sturdy and Durable Metal Case】Different from the General Metal Case, This Drill Bits Case is Made of Q235 Cold Rolled Steel Plate, which Can be Opened and Closed Smoothly to Take the Drill Bits out at Any Time. - 【21 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, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8 [DIA 1/64 Inch Increments] ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C46XBQYB | | ASIN | B0C46XBQYB | | Best Sellers Rank | #231,526 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,028 in Power Drill Bit Sets | | Brand Name | STROTON | | Customer Reviews | 4.5 4.5 out of 5 stars (192) | | Customer reviews | 4.5 4.5 out of 5 stars (192) | | Cutting Angle String | 118 Degrees | | Cutting Diameter | 6.35 Millimeters | | Date First Available | 7 May 2023 | | Finish Types | Uncoated | | Item Weight | 1 Pounds | | Manufacturer | STROTON Ltd | | Manufacturer | STROTON Ltd | | Manufacturer reference | M35 Co5 1/16"-3/8" (21PCS) | | Material Type | Cobalt, Cobalt Steel, High Speed Steel (HSS) | | Minimum Bore Diameter | 0.38 Inches | | Number of Flutes | 2 | | Package Dimensions | 16.1 x 11.81 x 3.91 cm; 453.59 g | | Point Style | Split Point | | Shank Type | (1/16-11/64: Round Shank) (3/16-3/8: 3-Flat Shank) | | Surface Recommendation | Metal | | Tool Flute Type | Spiral | | UPC | 673498823361 | | Unit Count | 1.0 Count | ## Product Details - **Cutting angle string:** 118 Degrees - **Cutting diameter:** 6.35 Millimeters - **Finish type:** Uncoated - **Material:** Cobalt, Cobalt Steel, High Speed Steel (HSS) - **Shank type:** (1/16-11/64: Round Shank) (3/16-3/8: 3-Flat Shank) ## Images ![5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - Image 1](https://m.media-amazon.com/images/I/71U6DoKVOSL.jpg) ![5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - Image 2](https://m.media-amazon.com/images/I/71e5q0G7eQL.jpg) ![5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - Image 3](https://m.media-amazon.com/images/I/7177l84LB4L.jpg) ![5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - Image 4](https://m.media-amazon.com/images/I/81DFSJVF1wL.jpg) ![5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - Image 5](https://m.media-amazon.com/images/I/81eEQxE3VFL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***F on 2 January 2026* Been using these to drill steel at work and I'm impressed . Haven't had any break yet and they seem to stay sharp . Nice little case as well ### ⭐⭐⭐⭐⭐ Review *by N***Y on 27 December 2025* Had them for over a year and soon to buy another set. For the price I didn’t have high expectations, but it turns out these cut and hold up incredibly well. Great stuff. Don’t forget to order a bottle of tap magic ;) ### ⭐⭐⭐⭐⭐ Review *by M***G on 11 November 2025* good buy ## Frequently Bought Together - STROTON 5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index. - STROTON Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - 5/16-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 6 --- ## 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.id/products/539591933-5-cobalt-drill-bit-set-1-16-3-8-inch](https://www.desertcart.id/products/539591933-5-cobalt-drill-bit-set-1-16-3-8-inch) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-04-25*