This Bosch Holesaw Arbor is designed for use with Bi-Metal Holesaws and connects the Holesaw to the power tool with an arbor. It features a hex shank for compatibility with all corded and cordless drill drivers and standard threaded adapters. The arbor has a 1/2" thread and is fitted with a HSS-G pilot drill. It is suitable for use with hole saws and ensures a secure link between the saw blade and the drilling machine, enabling precise and clean holes on the workpiece. Made from high-quality steel.