I've Been Renovating for Decades, and This Is One Tool I Always Keep in My Kit
Briefly

The basic job of a wrench is to tighten or loosen nuts and bolts - something you can't do with any other tool. A wrench is essential for any repairs and projects.
Fixed wrenches fit specific sizes of nuts and bolts for best grip, but having an adjustable wrench allows versatility for various fasteners around the house.
Read at Apartment Therapy
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