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【Size 】Both ends of wrench include box end ratchet head and Open head with steel stamped size mark 5/16", Package include 1 piece.
【Material】Made by heat treated chrome vanadium steel for strength, polished and Chrome Plated mirror finish.
【12-POINT Box End】Provides a more precise and snugly fit to prevent slipping off while it working.
【Open End】It is angled 15 degrees.Provide you with an extra working swing arc when working in a narrow space, and can be flipped over for each rotation so that the fastener engages twice.