This is a Giant Control Blast 1 CO2 Inflation Kit. This CO2 tire inflation tool includes 1 CO2 canister and a reusable soft foam sleeve to keep from rattling against other items in your jersey pocket or in a saddlebag. Features: Kit includes: inflator head and one 16g threaded CO2 cartridge Ergonomic thumb control design ensures accurate pressure release Compatible with 12, 16, 20, and 25g threaded CO2 cartridges Includes one CO2 cartridges. Additional cartridges sold separately Specifications: CO2 Type: Threaded Cartridge: 16g (x1) Valve Compatibility: - Gauge: - Color: Black Weight: 45g (Inflator Head Only)