TOOL.HW.003Regular price $1.64 Sale price $1.23 Save 25%
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A hex key, Allen wrench or hexagon wrench, is a six-sided tool used to tighten and loosen screws with a matching hexagonal shape. Hex-headed screws are used to put together many of our handrail and railing kits. They come in handy in places where there are hidden set screws.