Lenox® Speed Slot® Bi-metal hole saw features a staircase design for easy plug removal. 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 4-3/8-Inch diameter. It fits 2L/6L snap-back arbor and 2L/3L/6L/7L standard arbor. Hole saw is ideal to cut mild steel, copper, brass, aluminum, wood, plastic, composition board and cast-iron.