From the product description, check product page for current description, price and availability:

• [Universal Poppet Valve]: Universal poppet valve for ball lock kegs, fits both gas in and liquid out port for Cornelius kegs/ corny kegs/ ball lock kegs. Detailed dimensions on picture No.2.
• [Quality Material Well Made]: The spring is made of anti-rust stainless steel and the O-ring is made of strong wear resistant silicone, all great quality and durable in use.
• [Air Tight Fit]: All the poppet valves are made of premium metal which has adequate spring force to seal good under pressure. Anti-corrosion silicone o-rings ensure you no air leaks & no liquid leaks. Heat resistance & environmental friendly.
• [Great Replacement]: If you got faulty poppet valve, it will definitely cause leaks from post, the best choice would be replace the whole poppet. Our universal ball lock keg poppet is great to replace a o-ring broken or spring deformed leaking poppet.

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