Patented bit holding system forces bit surface to opposing side for maximum retention. Chrome sockets; heat treated for durability and service ability. S2 and Alloy steel bits. Packaged in patented impact resistant Slide Rail System for ease in socket storage 7 Piece Metric Hex Bit Socket Set includes: 6, 8, 10, 12, 14, 17 and 19mm Sockets packaged on a clip rail.
