Professional tool for commercial or occasional use -Ideal for electricians, plumbers, mechanics and other heavy duty users. -HSS Hole saw -Bi-Metal Hole saw -Suitable for cutting holes in a wide range of materials including mild steel / stainless steel / cast iron / brass / aluminium / wood / plastics / copper UPVC / Acrylic glass / Bronze -HSS Bimetal cutter -Dimensions of the hole saw - 40mm -Depth of the hole saw - 45mm -Manufactured from high quality steel with M3 cutting edge for fast clean heavy duty cutting action -Holesaw is primarily used with a power drill where the Holesaw is used along with the Arbor