King Arthur Tools Universal Hex Wrench
It easily tightens and removes King Arthur’s Tools Universal Nut. The recessed hexagonal head design in the wrench makes securing and releasing the 21mm hexagonal head Universal Nut easy.
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Hex Nut Wrench has a 21mm hex head and fits all power tools from 4 1/2" to 9" (115mm to 230mm) with 5/8" or 14mm spindle thread shafts.