This replacement wing nut, often referred to as a “cartridge holder,” is used to securely and tightly fasten the cartridge in the head of a siphon or whipped-cream bottle. It is intended for older types of SODA siphon bottles manufactured and supplied up to 2011.
Thanks to its ergonomic winged shape, it enables quick and comfortable tightening without tools. By replacing a worn nut, you will improve the system’s seal, safety, and reliability when working with CO₂ cartridges.