stainless steel construction: durable, corrosionresistant metal body designed for repeated home use and longlasting performance. Simple lock design for home carbonation: locks onto standard PET soft drink bottles to forcecarbonate household beverages—beer, soda, and water—without complex equipment. Forcedcarbonation performance: engineered to perform fast, reliable forced carbonation on most PET bottles; once carbonation is complete, just remove the bottle cap and enjoy. Foodsafe sealing system: fitted with a foodgrade rubber Oloop and sealing pad to provide a secure, leak‑ seal during carbonation. Compact and easy to use: installs quickly on compatible bottles, requires minimal setup, and cleans easily after use. Typical uses Homebrew finishing: add carbonation to smallbatch beer bottled in PET to achieve consistent fizz before serving. Homemade soda and sparkling water: carbonate flavored water or syrups for fresh soda on demand. Refreshing flat drinks: recarbonate storebought or leftover beverages that have gone flat to restore bubbles. Compatibility and care Designed for use with most PET soft drink bottles; confirm bottle threads match before use. Rinse and dry the stainless steel cap and rubber seal after each use to maintain food safety and longevity. Why choose this cap Durable stainless steel and foodsafe sealing components make it a reliable, reusable tool for home carbonation. Locking design and simple operation let you carbonate a variety of drinks at home without bulky equipment.