SF-3 Tungsten Carbide Cutting Burrs, 1/4inch Shank Double Cut Burrs Die Grinder Bit Rotary File Accessories for Wood Stone Carving Metal Glass Grinding Engraving Polishing Cutting Shaping and DrillingFeatures:A: High-strength and ultra-sharp cutting teeth, high stock removal,saving precious working time.B: Double cut(2 flutes) have more cutting edges and will leave a smoother finish due to producing smaller chips.C: Made of tungsten carbide which boasts a level of hardness second to diamond on the planet.D: The durability is 10 times higher than HSS burrs and 200 times higher than small grinding wheels.E: HSS burrs will begin to soften at high temperatures.Tungsten carbide has high strength at high temperatures, you can run it faster and hotter for long production runs.TUNGSTEN CARBIDE BURRSWidely used for metalwork, tool making, engineering, wood carving, jewellery making, welding, casting.They can be used for professionals in the aerospace, automotive, metal sculpting, and metal smith industries, but also for DIYers.Package Included: 1X Carbide burrWarm Tips:? Please wear an eye mask to protect your eyes from filings.? Ensure your burr shank is well inserted into your collet and clamped down tightly.?Adopt different speeds of level according to processing materials.