Refillable 33G CO2 Cylinder 1/2-20UNF and 3/8-24UNF Threaded Neck for Life Jacket Wrist Straps Beer Soda Aquarium Features: - Product name:Rechargeable 33 gram gas cylinder - Thread:3/8-24UNF or 1/2-20UNF - Filling gas:CO2/H2 Soda ect.. - Made of stainless steel 304 - Working pressure: 20mpa/3000psi - Mini Convenient/High quality and durable - Detachable design:It is convenient for disassembly and washing.Not rust - Serviceable range:Airsoft/Beer machines/Soda/Tires/Balls /Beauty gun /Mouse killer / Paint Spray Gun /fire/ rescue and so on. - Packaging: 1pcs cartridge+1pcs adapter CO2 cylinders are commonly used in areas where power is required for expansion, cooling, propulsion and mechanical movement. Specifically, our products are suitable for rescues of various sizes (life jackets, wrist straps, etc.), food processing (such as beer and soda machines), air gun power, aquariums, beauty injections, and more.