Using this tungsten storage tube is easy. First, open the threaded cap. You can then place your 3/32 diameter tungsten electrodes inside. The tube can hold up to thirty - four of them. When you're done adding electrodes, close the cap tightly. The O - ring seal and wood strip will keep air and moisture out, protecting your electrodes. The magnetic base allows you to attach the tube to ferrous surfaces, so you can keep it in a convenient place. For cleaning, just use a dry cloth to wipe the outside of the tube. Don't use any harsh chemicals as they might damage the tube or the O - ring. If you notice the O - ring is wearing out, it's a good idea to replace it to maintain the moisture - proof function.