Sunex 214fp 1/2-Inch Drive 7/16-Inch Female Pipe Plug Socket Forged from the finest chrome molybdenum alloy steel-the best choice for strength and durability Radius corner design-to extend the life of fasteners The design drives the side of the fastener instead of the corner Designed for removal of drive shaft in limited clearance applications 1/2-Inch drive female pipe plug socket-7/16-Inch