LEZYNE Twin Speed Drive CO2 Bicycle Tire Inflation System w/Cartridge Bike Accessories_Saddle Covers 5:1 ratio design for best

5:1 ratio design for best aerodynamic advantage

Designed to accommodate both male and female athletes

proven comfort and highly efficient transfer that delivers premium performance

are super durable and a great choice to complete your cycling outfit

LEZYNE Twin Speed Drive CO2 Bicycle Tire Inflation System w/Cartridge Bike Accessories_Saddle Covers 5:1 ratio design for bestCNC machined aluminum dispenser with brass internals. Slip on valve operation allows for quick inflation. Twin Slip Fit head presses onto Presta or Schrader valves. Two piece head allows for easy O ring replacement. Neoprene sleeve insulates hand from cold during discharge. Compatible with threaded CO2 cartridges. Includes one 16g or 25g cartridge.