Product Info 2x 16g CO2 Cartridges CNC machined aluminium alloy inflator Inflates Road tyre (700 x 25C) up to 100psi from flat Push down design to easily control CO2 release Stainless steel internal pin Soft touch button & neoprene sleeve to prevent freeze burn Dual head nozzle, compatible with both Presta & Schrader valves Thread on nozzle for airtight fit