GreatNeck HK13L 13 Piece Long Hex key Set Clamshell Great Neck 12 Pc. Long Arm Hex Key Set with Holder Includes Sizes: .050, 1/16", 5/64", 3/32", "7/64",1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8" Long Arm Hardened & tempered Chrome molybdenum steel GreatNeck HK13L 13 Piece Long Hex key Set Clamshell Features: Hardened and tempered chrome vanadium steel Black oxide finish Long arm size 13 piece set includes .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8" Carded