3M® Softback Sanding Sponge, for Handy Sanding, Aluminum Oxide Mineral Coated, 114×139mm, Thickness 5mmIdeal for Sanding Surface, Highly Versatile Abrasive, Waterproof, Grit 120~1,500, 스폰지연마재, 페파 (SL21CAT00003685)