XLAB Sonic Nut Inflation Holder

Why have your CO2 cartridges rattling around in a seat bag when you can get Xlab's Sonic 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 Sonic Nut is compatible with Xlab's Sonic and Turbo Wings.