Umarex 12-Gram CO2 Cartridges – 12g for Co2 pistols like Beretta 92 fs, Walther Cp 88 and many other. Power your CO2 BB, Pellet guns. It doesn’t dirty your air gun valves. Number of rounds per capsule depends on the airgun. Umarex is one of the best brands for Co2 pistols as you all know. Available at the best price in the market.Contact us for bulk orders at 70822-33324.Happy Shooting!