Milwaukee 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. Features wide, angled and offset slots for easy plug access. Works with the following arbors: 49-56-7210, 49-56-6950, 49-56-7000 and 49-56-7010.