RavX CO2 Bracket with 2 16g Threaded Cartridge Co2 bracket with compact storage which mounts For threaded cartridges lightweight alloy construction rubber safety grommets mounts between your bottle cage and frame Bracket + 2 x 16g CO2 threaded cartridges For threaded cartridges Lightweight alloy construction Rubber safety grommets Fits on cage mounting pilot holes Available in: Bracket + 2 x 16g CO2 cartridges Bracket only Bracket + 2 x 16g CO2 threaded cartridges