+3 Umarex High-Grade Co2 (12 Count) 2252533 C $14.99 Specially made with close attention to tight tolerances, the Umarex 12-gram CO2 cartridges have uniform neck dimensions. That makes it more likely that every cartridge will pierce properly and gas will be evenly dispersed into your air gun. In stock Quantity: 1 Add to Bag Product Details UPC: 723364525339 Brand: Umarex Save this product for later Favorite