Ideal for Home Use: Featuring a ball lock, this carbonation cap is most commonly used for carbonating home beverages, as well as an ideal choice for beer, soda and water. Easy to install. Stainless Steel Material: Made of premium stainless steel, this carbonation cap is erosion resistant and built to last. A must have for home carbonation equipment. Great Performance: This carbonation cap is ideal for force carbonating beverages, suitable for most soft drink bottles. When coupling CO2 into the bottle for carbonation, simply disconnect the cap from the PET bottle and ball lock gas. Your homemade drinks are ready to go. Versatile: This carbonation cap set comes in a pack of two, making it perfect for home use or to share with friends and family. Its versatility makes it suitable for use in restaurants, bars, and cafes as well. Food Safe Sealing and No Leaks: Manufactured with excellent materials, this carbonation cap is fitted with an O loop and a sealing pad, both made from food safe rubber. No leaks to worry about.