Cmt Tri-Metal Plus Hole Saw 3-1/2 In. Diameter

Special tooth geometry with regular pitch provides a smoother cut and better chip clearance preventing clogging and heat build-up. Teeth are alternate & side set to minimize binding and friction requiring less feed pressure. Ideal for mild steel (up to 1000 N/mm2 strength), stainless steel, non-ferrous metal, aluminum, cast iron, copper and zinc. Bi-metal plus 8% cobalt: premium bi-metal with 8% cobalt provides extreme results in performance and up to 50% longer lifetime than the competition.