MT-S13 Small Buffing Wheel Tungsten Carbide Rasp / Contour Cup w/Adaptor Tire Inner Liner Tube Buffing Tire Repair Abrasive Tool Bowl shape Tungsten alloy Grinding Head polishing head Matrial: Solid Carbon Steel Size:Dia. 38mm(1.5") x H 18mm Shank Diameter:6mm (1/4") Function: Tire Injury Repair, Tire Inner Liner / Tube Buffing, Easy for Using Patch Repair Application:Tire Inner Liner / Tube Buffing, Low Speed Buffing Usage:Easy for Tire Patching