20 Pcs Diamond Grinding Bits,3mm Shank Diamond Mounted Polishing Tips

Size: Head diameter: 8mm / 0.31 inch; Shank diameter: 3mm / 0.11 inchCylindrical point, diamond-coated heads that can be mounted on electronic grinders, gantry grinders and hand drills.Excellent for carving, engraving, forming, drilling and Smoothing the surface.Diamond coated drill bits are suitable for glass, tile, stone and hardened metalsColor: silverMaterial: diamondPackage Contents: 20Pcs 8mm diamond mounted grinding burrOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.