Lenox speed slot bi-metal hole saw features a staircase design for easy plug removal. It has T2 technology that offers cleaner and faster cuts. Hole saw is welded to a shatter-resistant spring steel back. It cuts up to 1-5/8 inch deep. It has a sleek slit, enhanced tooth geometry and advanced coating for efficient cutting process. Hole saw has 1-1/2 inch diameter. It fits 2 length/6 length snap-back arbor and 2 length/3 length/6 length/7 length standard arbor. Hole saw is ideal to cut mild steel, copper, brass, aluminum, wood, plastic, composition board and cast-iron. Hole sawReinforced to cut stronger, last longer and resist tooth strippageThick backing plate with holes for drive pins resists damage due to high torqueHigh speed steel teeth resist breaking and offer extended lifeBi-metal1-1/2 in. diameterUse this hole saw with a 2L, 3L, 6L, 7L standard arbor or a 2L, 6L snap-back arbor.