Strength and Grip with one end features a 6-point box end design that grips the fastener on more sides than a 12-point design. This stronger grip minimizes the risk of rounding off fastener corners, especially when applying high torque. The other end boasts an open-end design, providing access to fasteners from the top and side. This is helpful in situations where a box end can't be reached due to obstructions. Combination wrenches have the same SAE (inch) or metric size on both ends, allowing you to work on a specific fastener size without switching tools.
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