Select the FX87 P60 grit ceramic belts where there may also be some weld removal needed. Select the FX87 P80 grit ceramic belts where it is more about shaping and finishing the metal. We have included 6mm and 13mm wide belts. For other width and grit options got to the powerfile belts page Why ceramics not zirconia? Simple. They last longer and are just as competitively priced!!