Innovations Tire Repair and Inflation Wallet Twist-to-inflate technologyTM: Twist the cartridge to open and close the valve, and to control the flow of CO2 Works with Big Air! and Innovations threaded CO2 cartridges Push on for Presta, screw on for Schrader valves High strength, glass-reinforced nylon, with brass valve internals Size / Weight: 26mm x 39mm x 18mm; 1.25 x 1.75 x .70; 1.38oz, 38g