these set offer unmatched hardness and heat resistance, making them ideal for high-impact applications and long-lasting performance across tough materials like steel, aluminum, wood, and stone. This 20-piece drill bits supports a wide range of tasks, from carving, grinding, and deburring to engraving and finishing. Perfect for DIY enthusiasts, metalworkers, woodworkers, and professional artisans, it's ideal for projects requiring precision in metal, wood, plastic, and more. The double-cut design offers aggressive, fast material removal with minimal effort, outperforming traditional single-cut tools and making these burr bits excellent for fine detail work, shaping, and smoothing on various surfaces. The 1/8 inch shank size is compatible with for and other high-speed rotary tools, ensuring smooth integration with electric and air-powered grinders, die grinders, and flex shafts. Optimized for use with rotary tools for heavy-duty projects. Includes a sturdy storage case with 20 slots, keeping the die grinder bits organized, safe, and easy to carry-perfect for on-the-go professionals and hobbyists alike. Ideal for anyone needing aggressive, precise, and burr bits, this set covers all your crafting and detailed work needs across a wide variety of materials and projects. Colour:As Shown Material:steel Package Contents: 1 set * for bit set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.