16g and 25g replacement cartridges for the CprO2 and the CombO2 pumps.
- Threaded screw-type for reliability and safety
- 25g has enough pressure to fill a 29 x 2.3" mountain bike tyre (40psi max)
- 16g has enough pressure to fill typical road tyres to 100psi
- Compatible with screw-type refillers and Specialized CPRO2