Our Hole Dozer™ with carbide teeth hole saws feature a new 3 TPI design that offers you fast cuts with the durability of a bi-metal hole saw and the life of a carbide hole saw. These carbide teeth hole saws provide the longest life in general-purpose and extreme materials with the ability to cut through stainless steel, cast iron, fastener embedded wood, cement board, fiberglass, plaster, asphalt shingles and more with ease. Deep gullets clear material fast while cutting and Milwaukee's all access slots solve the frustration of plug removal, making you more productive with less downtime between holes. 3 TPI design with Milwaukee® carbide teeth technology Faster cuts with 3 TPI design All-access slots for fastest plug removal For the toughest applications where bi-metal cannot cut Deep gullets clear material fast