ITEM NAME:2Pcs 6mm Shank Diamond Coated Cylinder Head Grinding Bit for Rotary Tool - 8mm Description: Cylinder shaped diamond coated with metal shank, high abrasion resistance. Durable, and long service life, great for deburring and polishing . Perfect tools for DIY enthusiast or hobbyist or craft fan. Widely used for metalwork, tool making, model engineering, wood carving, jewelry making, etc. Great for sculpturing, dressing, precision grinding and internal grinding car.2 Pieces Diamond Grinding Bit. Material: Diamond. Durable, and long service life, great for deburring and polishing. Perfect tools for DIY enthusiast or hobbyist or craft fan.