Fuller Tool 130-8030 30-Piece Combo SAE/Metric Hex Key Set Precision-machined for a secure fit with chamfered tips for ease of key entry into hexagonal openings Chrome-vanadium steel for longevity helps to prevent "round-out" from occuring Includes a sturdy and convenient carrying case for storage and easy transport Set includes 15 metric hex keys: 0.7 mm, 0.9 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 10 mm Also included are 15 SAE hex keys: 0.028 in., 0.035 in., 0.05 in., 1/16 in., 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in., 3/16 in., 7/32 in., 1/4 in., 5/16 in., 3/8 in.