Innovations in Cycling 16g CO2 Cartridge Refill 2-pack

16 gram, threaded CO2 cartridges inflate narrow profile tires to high pressures, mid-sized mountain bike tires to optimal pressure, and wide MTB tires to rideable pressures. Works well for most road bikes, and also fills ATV tires. Compatible with the Ultraflate, Ultraflate Plus, Ultraflate Pro, Microflate, Air Chuck, Second Wind IH, and Second Wind MTB. Pack of 2.