New Paintball 1/4 Turn CO2 Tank On/Off Pin Valve Copper made NEW FREE SHIPPING We will use international first class mail.It usually takes about 13 business day to US from China. This is a replacement valve for your co2 cylinder. With this on/off valve you will able to control the co2 output a lot better. It can fit most of tanks with threads 5/8"-18UNF,Output threads G1/2-14.