XLAB X-Nut Inflation Holder

Why have your CO2 cartridges rattling around in a seat bag when you can get Xlab's X-Nut Inflation Holder and store them behind your saddle? It holds two threaded CO2 cartridges and an inflator (each sold separately) in an easy-access location. The X-Nut is compatible with Xlab's Carbon and Super Wings.