The extraordinary flex makes this a perfect product during continues movement around your workspace. Here are some good tips to optimise the life of your lead and protect your machinery. 1. Always turn off power at switch then remove plug. 2. Never start rolling up from the end you just unplugged. Go back to the machine and start winding up from there ! . this way your lead will be able to rotate and eventually you will train your lead to be just the way you like it.