• Manufactured using quality Chrome-Molybdenum alloy steel • Feature protective plastic socket sleeves to prevent damage to expensive custom wheels • Flip sockets give more sizes with fewer sockets • Flip sockets and impact extension available individually • Set Contains: • Molded Storage Case • (3) 1/2" Drive Flip Sockets- 17mm x 19mm, 3/4" x 13/16", 7/8" x 21mm • 3" Long 1/2" Drive Impact Extension