The door straightener corrects the alignment of misaligned furniture doors so that they open and close again perfectly. Fittings parts are no longer loaded incorrectly and the doors hang evenly and symmetrically. What's more, the tool can be used to compensate for changes in the wood caused by changes in the humidity or temperature. It is quick and easy to use the door straightener, as doors do not need to be removed and no special tools are required.