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The traditional extender for box-end wrenches is an iron pipe. Although a pipe works, it is awkward and requires two-handed operation. This steel extender can be used one-handed for either tightening or loosening a nut or stud. It has two powerful rare-earth magnets to hold a wrench firmly in position.

For box-ends up to 1/2", it triples the leverage. For a 1" box-end it doubles the leverage. Usable on all box-ends with shafts up to 7/16" (11mm) thick. Used face up for tightening and face down for loosening, it holds the wrench firmly in either position. The handle has multiple ridges for better grip.

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