6 Piece, Tungsten Carbide Gritted Hole Saw Kit, Consists Of 1-1/4", 2-1/8", 2-5/8", 2-7/8", Bayonet Mandrel #02951 & Pilot Bit #02953, Cuts Ceramic Tile, Concrete Block, Cement Backerboard, Brick, Fiberglass, Plexiglass, PVC, Wood With Nails, Cultured Marble & Dry Wall.