This Crosman Five-Count Box of CO2 Powerlets is designed for those who enjoy shooting with semi-automatic action. These Powerlets are compatible with any airgun, airsoft gun, paintball gun or other device that requires a 12-gram CO2 cartridge. These Crosman Powerlets can give you the ability to fire more quickly. Conveniently, there is no need to manually pump between shots. Each Powerlet weighs 12 grams. The purchase of this item includes a box of five.