Using these Lincoln Caliber Collets is easy. First, make sure your TIG torch is turned off. Then, select the right - sized collet from the available.020' - 1/8' (0.5 - 3.2 mm) options. Insert the tungsten electrode into the collet and place it in the torch. Tighten it up to ensure a secure fit. When using, don't overheat the torch for too long, as it might affect the collet's performance. After each use, let the collet cool down. To maintain it, clean the collet regularly with a soft brush to remove any debris. If you notice significant wear, it's time to replace the collet.