Norton's BlueFire F826P resin fiber discs are specifically designed to tackle stainless steel, super alloys, alloy steels, cast iron and high presure applications. They feature a new and improved blend of ceramic and zirconia abrasive grains for an increased cut rate and longer life over traditional zirconia products. Norton's BlueFire F826P resin fiber discs cut 15% faster and significanty longer, with less power draw. Their broad utility allows them to be used on a wide range of materials.