Rare snap on speed wrenches. Sae looks like only 3 were minimally used. 5/16 - 5/8 Double open end. One side to loosen the nut or bolt and flip it to essentially speed the nut off. Special open end pattern glides across bolt head to speed up removal. Therese are great wrenches to add to your collection. Discontinued design, and a great time saver. Ships free!
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