Use this cap to seal a soda bottle under CO2 pressure. An ideal way to bring homebrew to a party without all the accessories.TIP N' TRICK: Add a CO2 tee inline with your current CO2 setup and install our H481 Kent Shut-Off Female QD w/ 1/4 in Barb. This way you always have access to CO2 accessible to put your beer under pressure before leaving for the party.* A single-handed connection and disconnection* Strong plastic that can handle 250 degrees, very durable, and is medical-grade compliant and made from FDA approved material* Easy installation into your home brewery* KENT Systems quarter turn design functions safely regardless of pressure up to 125 p.s.i.