used as belts for stainless steel and hard alloy steel polishing, wipe off welding seam. TypeGrainGritBackingApplicationXA310A/O36 - 400X-Clothharder metal grinding and polishingPZ533R/R24-100beltused as belts for stainless steel and hard alloy steel polishing, wipe off welding seamXA140A/O36 - 400X-ClothLess blockade, wood, varnish grindingXZ331ZrO40 - 120X-Clothstainless steel and high alloy ...