Using these TIG rod storage tubes is a breeze. Simply open the tube, place your filler metals inside, and close it up. The neoprene seal will keep the rods protected. When it comes to identification, use the key tag to mark what's inside each tube. For maintenance, just wipe the tubes clean with a dry cloth every now and then. Make sure to store them in a dry place. Don't overfill the tubes beyond the 10 lb. capacity, as this could affect their performance and durability. Also, be aware that the colors in the multi - pack may vary from what you see in the photo.