Color band denotes SAE/Metric measurement for easy identification. Chrome vanadium steel. Fully polished for professional appearance. Lifetime warranty. Set includes 1 each: 3/8" x 7/16", 1/2" x 9/16", 5/8" x 11/16".
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.