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Box end head pivots 180° to easily get around obstructions
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6-point box end snugly fits hex-shaped fastener heads and resists slipping off while you work
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Box end opening is designed to grip flat sides of fastener heads, not corners, to prevent round-off
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72-tooth ratchet gear needs only a 5° working swing arc
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Open end is angled 15° so the wrench can be flipped over to engage fasteners twice as often in tight spaces