30pc Hex Key Set MM/AF a range of quality, precision hexagonal keys in both standard arm metric, & long arm imperial, containing long arm 0.028", 0.035", 0.05", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8". Short arm 0.7, 0.9, 1.3, 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8 10mm.