Item No.: B01K013

.This set includes a 5-inch rubber roller attachment that has two 8mm steel shanks to fit your drill and the included 20mm, 30mm, 35mm, and 45mm attachable rubber suction cups that make fitting and seating various valve sizes easy.

.Use with your existing electric drill and automotive valve grinding compound (not included) to correct surface irregularities and to remove sub-surface damage on your new valves when working on a top-bottom rebuild