Universal socket set. Color band denotes SAE/Metric measurement for easy identification. Textured bands offer improved grip. Chrome vanadium steel. Lifetime warranty. Set includes 1 each: 1/4", 5/16", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, and 19mm. Also includes 72T 3/8" drive ratchet handle and 6" 3/8" drive extension.