For those using CO2 powered devices, this 40 ct box of Crosman 12 Gram CO2 Cartridges provides a reliable source for launching your projectiles. Made with a solid seal, these CO2 Powerlets are designed to provide consistent, reliable performance. Crosman CO2 Cartridges (40 ct) are compatible with any airgun, airsoft gun, paintball gun or other devices that require 12 gram CO2 cartridges. With the power provided by a Crosman CO2 Cartridge, you can shoot in rapid succession without the need to manually pump between shots. Whether you are target shooting with BBs or playing a paintball tournament, your rate of fire can be as fast as you are ready to make it, with Crosman- 12 Gram CO2 Cartridges (40ct) powering your shots. You must be 18 years of age or older to purchase this product.