Combining metal construction and 8mm male connector for transfer in high pressure environments Engineered for critical applications, its threading withstands repeated pressurization cycles while maintaining tight in both household and laboratory Ideal for home carbonation enthusiasts, professional bartenders, and outdoor adventurers seeking compatibility across multiple charging and industrial grade durability With metal and TR21-4 thread, this adapter ensuring sealing through its reinforced 8mm brass fitting, eliminating leaks during carbonation processes sparkling beverages in kitchen, or enhancing portable carbonation systems during camping trips and picnics with this versatile connector, Manufacturer: APGLSXY