CO2 air cartridge coupling 2x Presta/Schrader adapter Composed of a Micro CO2 inflator and two 16g CO2 cartridges securely joined with Magic Tape. Using the seatpost mount (top tube mount) the CO2 inflator can be attached or removed easily and quickly. Velcro straps protect your hands from the cold CO2 cartridges during inflation. Easily carry a camera with the included Velcro straps. CO2 inflator compatible with Presta/Schrader valves. Installation: Mount on the horizontal tube or seat post. Mounting kit compatible with seatposts: ø25.4mm - ø34.9mm Compatible with the READYGO Lumis rear light. Velcro tape included. Weight: 185 gr.