Features and Benefits:?Coarse grit & segmented edge for fast cutting?Includes carbide tipped pilot bit?Tungsten carbide grit edge for abrasive materials?Wide, angled & offset slots for easy plug access?Works with the following arbors: 49-56-7240, 49-56-7250, 49-56-9100, 49-56-7055 & 49-56-7040Milwaukee? Carbide grit hole saws are designed for cutting abrasive materials such as brick, block, cement board, fiberglass and tile. Use a Carbide tipped pilot bit when cutting ceramic tile, brick, and other abrasive materials.