Features: Ribe sockets are designed to hold a ribe bit – a tool used to tighten or loosen screws and bolts ½” Drive fits any ½” Drive ratchet, bars, extensions etc. Supplied in a plastic storage case Specification: Length 30mm Ribe: 5, 6, 7, 8, 10 , 12 Length 75mm Ribe: 7, 8, 9, 10, 12, 13, 14 1 x 1/2" Drive x 10mm Adaptor