The Fuller 30-Piece SAE and Metric Hex Key Set features 30 chrome vanadium steel keys (15 standard, 15 metric) for maximum versatility in repairing and tightening a variety of different items. The key sizes are - .028, .035, .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-Inch and 0.7, 0.9, 1.3, 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8, 10-mm. Each key features a chamfered (curved) tip for ease of entry into openings. The anti-round-out designed keys are made from chrome vanadium steel for longevity. The keys come in a convenient storage case for easy storage and transportation.