●10 pieces of RUBBER polishing burrs for all your polishing needs. ●The heads are in cylinder shape with diameter of 10 mm. ●All 3mm (1/8 inch) shank. ●for Dremel and other compatible rotary tools. | ●US-BASED CUSTOMER SERVICE: Available by chat, email, phone, or visit us at our customer service center in La Crosse, WI.