Big Horn 19341 Heavy-Duty Angle Screwdriver Adapter with Lock - Quick Release 1/4" Shank. Drilling holes and installing screws or bolts in an area too small for a conventional drill/driver can exhaust the patience of the most experienced contractor. , Big Horn manufactures a 1/4-inch hex right angle attachment that is ideal for cordless drills. The tool’s quick-change magnetic chuck accepts standard 1/4-inch hex drive accessories and the durable metal housing utilizes steel gears and ball bearing construction that gives user more than enough torque for driving screws or for drilling smaller holes. At only 3 inches wide, the tool will fit in very small and compact areas.