ProMaker Stainless Steel Carbonation Cap Counter Pressure Bottle Filling with 5/16" Barb Ball Lock Type CO2 Coupling Carbonate Soda Beer Fruit Juice Water (1 Pcs);

â—† Material: 304 stainless steel
◆ Weight：3.5-3.6oz
Include:
â—† 2 piece of carbonation cap
â—† 4 piece of o-ring for replacement

â—† The post on this unique carbonation cap has been machined ,so it fit BOTH the liquid and gas ball lock disconnects.
â—† For best results, make sure that your beverage is very cold so that the CO2 can be absorbed much faster