Diameter: 3.5 cm/1.4 inch

Height: 3.5 cm/1.4 inch

The specification of the hose that can be connected with the joint is 1/64 inch(4 mm) in inner diameter and 6/25 inch(6 mm) in outer diameter

Application: Using our quick twist bottle cap and knowledge of chemical reactions, you can create a CO2 generator and DIY CO2 at home. You can also use these CO2 bottle cap to build a baby brine shrimp hatchery for your fish room or use them for a skimmer