Stone Carving Set Diamond Burr Bits 20pcs Polishing Kits
1. Made of carbide steel coated with diamond particles. Size of grinding heads 1/4(6mm) 2.Excellent for fine detail work, polishing, grinding, cutting, engraving, carving, touch-up and finishing. 3.Suitable for carving and grinding glass, metal , stone, ceramic, jade, jewelry, wood, plastic or other hard materials.