Phenix has come up with a vastly improved version of our weld in tank cap and bung. Featuring a special anodized cap with a superior grip and the Phenix bird laser etched on top, the cap makes a handsome addition to your tank project. The O-ring seal in concealed inside the cap for a good seal and neat appearance. These are currently available in 1.4 inch In the future we will be adding even more sizes to meet your needs. Cap it off with Phenix!