[High quality] These cutters are made of tungsten carbide steel for long life, high durability and abrasion performance. [Feature] The 2.35mm shank is suitable for many power or pneumatic tools and machine tools. [Convenient] 10 different shapes of drill bit composition, meet your needs. This set of carbide burs helps your rotary tool be even more functional. [Portable] Compact size, easy to use and carry. Packaged with a nice plastic tray for safety storage and protection. [Application] This rotary file can be used on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, tiles, marble, jade and bone. They are specially designed for carving, shaping and removing ridges or angles, burrs and excess material. These cutters are made of tungsten carbide steel for long life, high durability and abrasion performance. 10pcs different shapes of drill bit composition, meet your needs. This set of carbide burs helps your rotary tool to be even more functional. They are specially designed to sculpt, shape and remove ridges or angles, burrs and excess material. Settings: Material: tungsten carbide steel Shank diameter: 2.35 mm Head diameter: 6mm Quantity: 10pcs Weight: 70g / 2.5oz Package list: 10 burrs