This adaptor expands the versatility of your standard power drill by allowing it to accept tools and accessories with a 1/2" BSP male thread, including specialized bits, pilot tools, and custom drilling assemblies. Made from hardened steel, it provides a secure, stable connection. The straight shank fits perfectly in a 1/2" (13 mm) keyed or keyless chuck, while precision-cut female threads ensure easy, reliable attachment of male-threaded tools.