AQUATEK CO2 Paintball Tank CGA 320 Adapter With this adapter, you can attach a CO2 regulator (e.g. AQUATEK CO2 Regulator with COOL TOUCH Solenoid Emitter System) with CGA 320 thread to a paintball CO2 pin valve cylinder Enhanced safety feature: pressure relief hole relieves overpressure when dettaching the adapter from CO2 cylinder Be aware of Knock-Off. Aquatek is the sole authorized distributor to sell this adapter on Amazon. Be sure to purchase from Aquatek and fulfilled by Amazon (Sold by Aquatek and Fulfilled by Amazon, not from third-party seller) for genuine parts made of highest quality. Look for original package and color (blue) (CO2 solenoid regulator and CO2 tank are not included; for demonstration purposes only)