ForPro Ultra Gold Buffing Block features flexible foam that provides superior buffing results and is softer on the nail plate compared to traditional buffers. The abrasive, four-sided 240 grit will not scratch or damage natural nails during use. It is ideal for buffing nails prior to applying gel polish or nail lacquer. Washable and sanitizable. Packed for convenience in a clear, reusable storage container. ForPro Professional Collection features the highest quality, best value, and the largest selection for professionals and consumers. All products include a 100% unconditional guarantee.