Attributes . Standard Long Arm Key Wrench Set Sizes-5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8"; Metric Long Arm Hex Key Wrench Set Sizes-1.3mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm and 10.0mm; Ball End Hex Key Set Sizes-5/64", 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8"; Metric Ball End Hex Key Set Sizes-1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm . Names