... manufacture 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 a long working life. Shatter ... hole saws are recommended for cutting steel, cast iron pipe, steel plates, aluminium, copper, brass, stainless steel, wood and plastic, etc.Bimetal hole saw ...