Using the Klein 3238 Adjustable 1/2 - Inch Ratcheting Wrench is simple. Just place it on the nut or bolt you want to turn. The ratcheting feature allows you to keep the wrench in place and turn it back and forth without having to lift it off. When aligning bolt and rivet holes, use the tapered handle to guide the wrench. For maintenance, after each use, wipe it clean with a dry cloth. Store it in a dry place to prevent rust. Don't use it on objects that are too large or hard for it, as this may damage the wrench.