[Carbide Burr Set]Made of tungsten carbide of extreme hardness,high strength, and durability. It easily cuts into all kinds of metals (including hard steel,cast iron, cast steel, carbon steel, alloy steel, stainless steel, hardened steel, etc) and non-metals (such as marble, jade, bone) as easily as cutting butter [8pcs Different Shapes] 8pcs double cut carbide rotary file burr set Includes SA, SC, SD and type burrs,meets all your needs of finishing, cleaning, smoothing, shaping and carving,easy to grasp and use, safe and reliable [Double Cut Design] carbide rotary metal shaping bits double cut design,reduces the pulling action, allowing better operator control,Make cutting smoother grinding or carving job easy,shorten working time [ Widely Usage]Whether your job implies precision metal work, engineering, tool making, welding, deburring, jewelry making, or you enjoy DIY arts and crafts or hobbies ,carbide bur sets are exactly what you need for premium results,High-quality durable materials, enjoy your creation [ Compatibility]1/4inch (6mm) bit head diameter, Carbide burrs fit most small rotary tools,die grinders,for woodworking drilling carving engraving milling porting.widely used for metalwork, tool making, model engineering, wood carving, chamferring, deburring, grinding, cylinder head porting and sculpting Colour: Silver Material: Tungsten steel+Carbide Package Contents: 8 x for bits Only the above package content, other products are not included. Note: Light 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.