Product Description Available only from Brunswick, Siaair Micro Finishing Pads last longer than the current industry standard. Even better, the high performance abrasive and three-dimensional net structure provide a consistent finish for more bowling balls with less scratching. Features: Ideal for restoring a micro finished ball back to its out of the box surface Siaair pads are waterproof and washable Contains one each of the following grits: 360, 500, 800, 1000, 1500, 2000, 3000 and 4000