GRIDING WHEEL 22PCS reinforced cutoff wheels are designed to resist breakage caused by severe cross-bending. Resin bonds are organic bonds that soften under the heat of grinding, releasing dulled abrasive grains. Because of its forgiving nature, only an organic type bond is used in cutoff wheels. Straight (also called flat) wheels are the most common grinding wheel shape. Straight wheels are used for grinding on the periphery, or outside boundary edge, of the wheel and produce a slightly concave surface, called hollow ground, on the workpiece. Specifications: A36S F3 - Aluminum oxide 36 Grit Triple reinforced Hard bond for long life Quantity shipped: 10 Per box For cutting: Ferrous and non-ferrous metals Maximum operating speed 6,300 RPM