GRIP 73100 1/4-Inch MM Professional Socket Set, Chrome, 22-Piece Drop forged, heat treated, chrome vanadium steel. Chrome plated to resist rust and corrosion. Includes: 5" ratchet, 6" spinner handle, universal joint, 2 pc ext bars, 7 pc deep 1/4" sockets, 9 pc 1/4" shallow sockets, blow mold case. Sizes: deep (5.5, 6, 7, 8, 9, 10, 11mm), shallow (4, 5, 5.5, 6, 7, 8, 9, 10, 11mm).