Professional tool for commercial or occasional use, ideal for electricians, plumbers, mechanics, and other heavy-duty users. This HSS Bi-Metal Hole saw is suitable for cutting holes in a wide range of materials including mild steel, stainless steel, cast iron, brass, aluminum, wood, plastics, copper, UPVC, acrylic glass, and bronze. The hole saw dimensions are 57mm with a depth of 45mm. It is manufactured from high-quality steel with an M3 cutting edge for fast, clean, heavy-duty cutting action. The holesaw is primarily used with a power drill along with the Arbor. The Holesaw Arbor is suitable for hole saws ranging from 33mm to 152mm in diameter. It is fitted with a 6mm / 1/4" HSS centre pilot drill and has a hex fitting to prevent the chuck from slipping. The set screw in the Arbor allows for easy replacement of the pilot drill when worn. The shank size is 11mm, fitting most drills with at least a 1/2" chuck. The total length of the tool is 125mm, featuring a quick-release locking system. Not suitable for hammer action on the drill.