SAE & Metric Hex Key Set Includes two hex key sets SAE: 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4 in Metric: 1.5, 2, 2.5, 3, 4, 5, 6, 8 mm Rubber side inserts offer a secure grip Large, easy-to-read size markings