This 22-piece combination Hex-L(R) key set contains a full-range of inch and metric hex keys. It consists of a 13-piece set of long-arm hex keys in sizes: .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". Keys are stored in a red plastic holder. A second 9-piece set includes short-arm metric hex keys in sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, and 10mm. Metric hex keys are stored in a blue plastic holder. Keys are made of hardened, tempered alloy steel with black oxide finish. Warning: Some dust created by using this tool contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Made in USA. Home Improvement,Tools,Hand Tools