Color band denotes SAE/Metric measurement for easy identification. Textured bands offer improved grip. Chrome vanadium steel. Lifetime warranty. Includes fully polished 5" quick release ratchet, 4" extension, 6-point standard sockets in sizes: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", and 1/2". Metric sockets in sizes: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, and 13mm. Packed in a plastic storage rack.