TEMO 10 pcs 8mm (5/16 inch) Bullet RUBBER Rotary Tool Polishing Burr with 3mm (1/8 inch) Shank for Dremel and compatible 10 pieces of RUBBER polishing burrs for all your polishing needs. The heads are in bullet shape with diameter of 8 mm. All 3mm (1/8 inch) shank. Fits Dremel and other compatible rotary tools.