A handy CO2 tyre inflation kit to get you back on the trail.When a puncture strikes, this effective piece of kit will inflate your inner tube quickly and easily so you can get back on the saddle. It comes with two 25g CO2 cartridges (16g kit for road bikes sold separately), an easy-to-use inflator and a neoprene sleeve to prevent freeze burn. The kit works on both Presta and Schrader valves thanks to the choice of two nozzles. MTB inflation kit 2 x 25g CO2 cartridges1 x CNC-machined inflator head (compact and durable with soft-touch press down button which easily controls CO2 release)1 x neoprene sleeve (to help avoid freeze burn)Dual head nozzle compatible with Presta and Schrader valves