39 PC 1/4" DR General Service Socket Set Professional Quality Chrome Vanadium Socket Set Includes 1/4" Drive Quick Release Ratchet, 6" and 2" Extensions Bars, Standard and Deep Wall SAE Sockets SAE Sizes:3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" Metric Sizes: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm Great Neck General Service Sets contain the highest quality components Great Neck has ever offered.