Eklind 10518 18 Piece Set Standard & Metric Hex KeysEklind 10518 18 Piece Set Standard & Metric Hex Keys Features:; 8650 alloy steel; Hardened and tempered; Resists rust; 18 piece set includes 11 standard sizes in .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" and 7 metric sizes in 1.5mm, 2mm, 3mm, 4mm, 5mm, and 6mm; Compact holder firmly retains each key