Next generation patented, premium, self-sharpening, 100% zirconia abrasive delivers longer life, faster cut, and outstanding durability; the consistent scratch pattern means the finest finish for the floor Y-weight heavy cotton backing extends grain retention and product life; open coat design ensures minimal loading Anti-static technology increases dust collection efficiency for a cleaner working environment; improved resin bond ensures grain retention under the most demanding applications Better choice for medium grit, fast cut on hard wood species