A Basin Wrench is a long handled wrench which has adjustable spring loaded jaws. Basin Wrench allows you to reach to those spots which are not easily accessible for tightening or loosening a joint, for instance, underside or behind the sink. Basic Wrench is one of the most important do it yourself plumbing tools. If you aim to do something more than the basic things yourself then at present or afterwards you are likely to have cutting and soldering of pipes. You would need to get supplementary tools like pipe cutter to cut pipes, and soldering materials to solder pipes - such as pipe-cleaning tool or emery cloth, soldering flux, solder, torch, striker, and protective eyewear - all of which can be bought online at great prices.