Crescent wrenches are versatile tools that you can use to tighten or loosen nuts and bolts of varying sizes, making them perfect for anything from plumbing jobs to assembling furniture.

After testing 15 wrenches over the years, we’ve determined that the Channellock 8WCB WideAzz 8-Inch Adjustable Wrench is the best for most people.

First, we tightened 3/8-inch and 3/4-inch hex nuts with a torque wrench, and then used seven cordless impact wrenches to bust free the nuts. Surprisingly, there wasn't a single tool with which we ...

Today, the wrench is referred to as an Allen wrench, an Allen key, or hex key. These tools are available in fractional inch sizes (1/4 inch, for example) and metric (4 mm, for example).

We may receive a commission on purchases made from links. The Allen wrench, also known as a hex key, is a L-shaped hand tool with hexagonal (six-sided) ends. It all started with a Connecticut ...