Proferred Tools Combination Wrenches - SAE Chrome Vanadium Steel Drop Forged for Maximum Strength Easy Size Identification 12 pt. Box Wrench End Sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8", 1-1/4", 1-5/16", 1-3/8", 1-7/16" & 1-1/2"