110Pcs Grinding Wheel Rotary Grinding Tool And Polishing 12xshank : Made of wool and metal, used with polishing compounds do producing a high surface on all moderation and forms Package: One plastic box contains 12pcs Shanks and 110pcs Wool Wheel Grinder (30pcs Large Cylinder, 50pcs Smal Cylinder and Cone 30pcs) and portable design do precise operationIdeal do smoothing of internal surfaces, polishing burrs Installed on the die grinder, tool do rotary grinding and polishing, applies to all metal material and other non-metallic products polishing, surface finym finish Suitable do pneumatic electric rotary grinder, used do polishing all kinds of mold, electronic, glass, medical equipment, gold and silver jewelry, metal, etc. sizes: Large cylinder size (dixthickness): 25x6mm or 0,98x024 inch Small cylinder size (dixthickness): approx13x6mm or 0,51x024 inch Conical size (dixh): 10x20mm or 0,39x079 inch Fixed Dia:clformox 3,17 mm or 0,13 inch contains: 30pcs Large Cylinder Grinding Head 50pcs Smal Cylinder Wool Grinding 30 pieces grinding cone 12 pieces of repaired shafts