Check the listing for details. Blackburn Mammoth CO2'Fer Mini Bike Pump, Black. Color: Black, Condition: New. Listed at 54.95 USD. Mammoth CO2Fer Mini Bike Pump Description The Mammoth pushes a lot of air with a low max PSI, ideal for the larger tires that come with gravel and trail riding while remaining compact and lightweight. Pair that with the added benefit of an adaptive inflation head that threads onto CO2 cartridges when you need some extra punch, and youve got yourself a very well-rounded pump. Features Cleverly designed and fully functional mini pump functions as a standard mini pump AND a CO inflatorAllows a CO2 cartridge to stow away inside pumpHead conveniently morphs into a thread-on CO2 inflatorBike Mount - Includes an easy-to-install mount that fits under your water bottle cage Attributes Color: BlackTechnical Specifications Material: AluminumMaximum Pressure (psi): 50psiProduct Dimensions: 24.5 x 180mmWeight: 136gPump Type: Hand PumpValve Type: Presta