Crosman CO2 Powerlet Cartridge clean-piercing, nonleaking, and rust-resistant performance, making it an i choice for powering your airguns. These pressure-uniform Powerlets are compatible with all Crosman models and most other CO2 airguns, ensuring versatility and convenience. Designed with a solid seal, they provide consistent and reliable performance every time you use them. Each package contains five 12g cartridges, neatly boxed for easy storage and handling. Model Number: 231B