Weiler Tiger Paw flap discs are designed for the user looking for aggressive performance and long life in heavy-duty applications like edge grinding. 100 percent zirconium grain is fast cutting with long life, resulting in fewer change overs and increased productivity. Superior grain retention - lasts longer and maintains perfect cutting angle to provide excellent performance and sustained stock removal when grinding on-edge. Engineered poly/cotton cloth features excellent grain retention for maximum disc life. Phenolic prevents backing from scratching the workpiece. Zirconium grain features multi- crystal, fast cut rate, self- sharpening, stands up to heavy pressure and high temperatures and high rate of stock removal and long life in demanding applications. Smooth action and long life; for heavy - duty applications on steel and stainless.