Purpose: The Big Barrel E-Z Safety Seal Valve fits securely inside the neck opening of any 9â€, 10â€, 11†or 12†latex balloon. The patented 1-way self-sealing valve allows Helium to quickly inflate the latex balloon and the attached 4-feet of Satin Ribbon eliminates hand-tying and facilitates ultra-fast balloon and event decorating. Balloon Valves, also known as Helium Balloon Plugs, Self-Sealing Helium Balloon Valves, or Valved Latex Balloons, provide consumers with the fastest and easiest way to inflate, seal and string any latex balloon in 6 seconds flat. Ideal uses are when decorating for Birthday Parties, School Graduations, School Dances, Business Tradeshows, New Product Launches, Raising Money for Charities, Quinceneras, Weddings, Event Planning, Party Decorating and more. Inflate hundreds of helium-filled latex balloons with these helium balloon valves in just minutes, not hours! No more sore fingers or need to buy balloon ribbon. Valves are Re-usable and can re-inflate the same latex helium balloon the following day which saves money.