--- product_id: 537744825 title: "(1/16\"-3/8\") 21pcs cobalt drill bits set" brand: "stroton" price: "MX$1928" currency: MXN in_stock: true reviews_count: 13 category: "Stroton" url: https://www.desertcart.mx/products/537744825-1-16-3-8-21pcs-cobalt-drill-bits-set store_origin: MX region: Mexico --- # 21 precision sizes from 1/16 to 3/8 inch 68 HRC hardness for heat resistance 5% Cobalt Steel for 3X durability (1/16"-3/8") 21pcs cobalt drill bits set **Brand:** stroton **Price:** MX$1928 **Availability:** ✅ In Stock ## Summary > 🔩 Drill Smarter, Last Longer — Own the Toughest Jobs with STROTON! ## Quick Answers - **What is this?** (1/16"-3/8") 21pcs cobalt drill bits set by stroton - **How much does it cost?** MX$1928 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/537744825-1-16-3-8-21pcs-cobalt-drill-bits-set) ## 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 - • **Heavy-Duty Storage:** Durable Q235 cold-rolled steel case keeps your bits organized and ready for action. - • **Unmatched Longevity:** 5% cobalt steel boosts tool life and wear resistance by 3X, saving you money and downtime. - • **Versatile Size Range:** 21 drill bits in 1/64 inch increments cover every project from delicate plastics to tough cast iron. - • **Precision Split Point:** 135° split point design ensures effortless, accurate starts on stainless steel and hard metals. - • **Speed Meets Efficiency:** Run drills 3X faster with superior heat dissipation—cut more holes with less wear. ## Overview The STROTON 5% Cobalt Drill Bit Set features 21 industrial-grade M35 HSS bits with 68 HRC hardness and a 135° split point for precision drilling in stainless steel, hard metals, wood, and plastic. Engineered for 3X longer life and faster drilling speeds, this set comes in a rugged cold-rolled steel case, making it the ultimate choice for professionals demanding durability and versatility. ## Description 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. - desertcart.com Review: Thumbs up. - 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: Great Drill Bits!!! - These are an excellent value. I used one bit to drill 16 holes in 5/8" steel and 60 holes in 3/16" steel. Almost no wear and still sharp! I just bought a set of 1/4" bits from Stroton for another project. VERY pleased! Secret is to not run the bits at a slower speed on a drill press and use light application of a cutting oil (I use a syringe to apply just at the hole location and stop midway to apply a drop in the hole). If you get spirals of metal from the bit the speed is good - if you get dust the speed is too high. ## 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 | | Best Sellers Rank | #106,037 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #240 in Jobber Drill Bits | | Brand | STROTON | | Cutting Angle String | 135 Degrees | | Cutting Diameter | 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 Inches | | Date First Available | May 3, 2023 | | Finish Type | Uncoated | | Item Weight | 1 pounds | | Manufacturer | STROTON Ltd | | Material | Cobalt, Cobalt Steel, High Speed Steel (HSS) | | Number of Flutes | 2 | | Number of Pieces | 21 | | Package Dimensions | 6.34 x 4.65 x 1.54 inches | | Point Style | Split Point | | Shank Type | (1/16-11/64: Round Shank) (3/16-3/8: 3-Flat Shank) | | Surface Recommendation | Metal,Stainless,Steel | | Tool Flute Type | Spiral | | UPC | 673498823361 | | Unit Count | 1.0 Count | ## Product Details - **Cutting Angle String:** 135 Degrees - **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 ![(1/16"-3/8") 21pcs cobalt drill bits set - Image 1](https://m.media-amazon.com/images/I/71U6DoKVOSL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Thumbs up. *by N***Y on December 27, 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 ;) ### ⭐⭐⭐⭐⭐ Great Drill Bits!!! *by W***N on October 25, 2024* These are an excellent value. I used one bit to drill 16 holes in 5/8" steel and 60 holes in 3/16" steel. Almost no wear and still sharp! I just bought a set of 1/4" bits from Stroton for another project. VERY pleased! Secret is to not run the bits at a slower speed on a drill press and use light application of a cutting oil (I use a syringe to apply just at the hole location and stop midway to apply a drop in the hole). If you get spirals of metal from the bit the speed is good - if you get dust the speed is too high. ### ⭐⭐⭐⭐⭐ accurate bits *by C***G on March 20, 2025* it’s sharp, bits quality and speed Value for money. perpect ## 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.mx/products/537744825-1-16-3-8-21pcs-cobalt-drill-bits-set](https://www.desertcart.mx/products/537744825-1-16-3-8-21pcs-cobalt-drill-bits-set) --- *Product available on Desertcart Mexico* *Store origin: MX* *Last updated: 2026-04-22*