This folding hex tool has 12 different hex keys in metric and SAE sizes, a versatile tool that will come in handy on many jobs. U.S.A. Sets (qty.): 1, Total Hex Keys (qty.): 12, Hex Tool Type: Folding, Metric (mm): 1.5, 2, 2.5, 3, 4, 5, SAE (in.): 5/64, 3/32, 7/64, 1/8, 9/64, 5/32