Using these Lincoln WX Purple Multi - Oxide Premium Tungsten Electrodes is straightforward. First, check the amperage of your equipment. If it's between 330 - 480 A, you can use the 1/8' electrode diameter. You can use them with both AC and DC currents, so choose the one that suits your application. When using, be aware that they are non - radioactive, which is safer for you. Also, thanks to their special multi - oxide composition, they resist contamination well. For maintenance, keep them in a dry place to prevent any damage. After use, you can easily dispose of the shavings and stubs. If you notice any signs of excessive wear, it might be time to replace the electrode.