General description Heavy duty variable pitch holesaw made from bi-metal construction, featuring hardened HSS teeth and a flexible high carbon steel backing for fast, clean cuts. Technical specifications Diameter: 152 mm Material: Bi-metal Teeth: Hardened HSS Backing: Flexible high carbon steel Usage This holesaw is suitable for cutting through a variety of materials including cast iron, stainless and structural steel, alloyed and non-alloyed aluminium, bronze, copper, PVC, acrylic, and wood.