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

• 【Well Made & Great Quality 】Keg lid and diffusion stone is made from 304 stainless steel. keg lid valve is plastic. 20 Inch Tube is food grade silicone
• 【 A Standard Carbonation Lid 】 Fits cornelius (corny) kegs and similar standard homebrew kegs. Our keg lid is the standard oval lid
• 【Includes All You Need】Keg lid + 2 micron aeration stone + 20 inch tubing; All the metal parts are made of SS304, pressure valve head is made of solid ABS, tube is made of food grade silicone, and all the gaskets are made of food grade sturdy rubber.
• 【MULTIPURPOSE】 – Carbonate beer, soda, water, juice, and even tonic or seltzer water at home; Can be used for carbonation or as a replacement for your current, worn out keg lid
• How To Check Leaks Or Not 】 After injecting some CO2 in your keg, you can sprayed down the lid area with sanitizer to check for any leaks. You will see no bubbles, proving our keg lid is no leaks

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