This is a New Carbonating Lid with Ball Lock Plug for your Cornelius or Firestone Kegs. It comes with everything you need to use right away including the 2ft of tubing, 2 clamps and 0.5 micron diffusion stone. Once the beer is carbonated to your liking, remove the carbonating lid and replace with the standard keg lid.
Remember to sanitize the stone in boiling water before use.
The wider handle of the lid will only allow it to fit kegs without the rubber handle on top.