... 2,TCT,Bi-mental,HSS hole saw 3,cutting wood,steel 4:size14~380mm HSS BIMETAL HOLE SAW*HSS M42 teeth electron welded ... to a high alloy steel body ensuring maximum durability and ... hole saws are recommended for cutting steel, cast iron pipe, steel plates, aluminium, copper, brass, stainless steel, wood and plastic, etc.Bimetal hole saw ...