Color band denotes SAE/Metric measurement for easy identification. Feature non-slip open end. Chrome vanadium steel. Fully polished for professional appearance. Lifetime warranty. Mounted in convenient storage/carrying rack. Set includes 1 each: 1/4″ x 5/16″, 3/8″ x 7/16″, 1/2″ x 9/16″, 19/32″ x 11/16″, 5/8″ x 3/4″.