12 PCS Bowling Sanding Pads, Bowling Ball Sanding Sand Pads Polishing Cleaning Kit, Grit 400, 500~600, 800~1000, 1200~1500, 2000, 2500, 3000, 5000, Bowling Ball Resurfacing Polishing Kit. BOWLING BALL SANDING PADS: The bowling sanding pads contains 8 types of sanding pads with different grit counts, 400 x 1, 500~600 x 2, 800~1000 x 2, 1200~1500 x 2, 2000 x 1, 2500 x 1, 3000 x 1, 5000 x 2, total 12 pieces, Can polish bowling balls with varying degrees of wear and tear.