1. Material: tungsten steel 2. Application: processing cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, and marble, jade, bone and other non-metals 3. Features: wide applicability, high finish, can process a variety of high-precision mold cavities, easy to master, simple to use, safe and reliable 4. Size: about 9.8x6.5 cm/box (10 pcs/box) 5. Weight: about 80g/box