Our Open-End Ratchet Wrenches are the only wrench on the market with an innovative ratcheting feature on the open end. With its strong grip and small head, it makes accessing tight work spots possible. 8pc. Open-End Ratchet Wrench Set - SAE (3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16")