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Q. I tried removing the lug-nuts on my 2008 Toyota Corolla using a 20-volt Craftsman impact driver with a 21mm black socket to remove tight lug nuts. Is 21mm the correct size for 2008 Toyota Corolla?

A. An impact driver (battery or electric) is a handy tool for removing small fasteners but is not made for removing lug-nuts. The correct socket size is 21 millimeters or 13/16ths of an inch. I would get a large breaker bar, or four-way lug wrench to loosen the lugs. If this is something you are going to do often you may want to invest in a plug-in of battery heavy duty ½ inch drive impact wrench. Once the lug-nuts are snug use a torque wrench to finish tightening the wheels. Properly torquing the wheels helps prevent over or under tightening. U

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