The X-Lab X-nut is an excellent way to hold X-Lab CO2 cartridges and X-Lab Nanoflator or Speed Chuck. It keeps the flat fixing supplies organized and handy. It attaches to Xlab Carbon Wing, Super Wing and Flat Wing systems. The X-nut makes inflating tires a snap during training rides or out on the race course. Holds up to two Xlab CO2 cartridges.
No doubt, its a great idea. However, you will void the warranty if you dont use XLabs C02 cartridges even though the std cartridges that are available everywhere will work. Probably I would never need a warranty on a solid metal piece like this but its the whole idea of XLab not stating this in its product description. You this out find after youve gone through the trouble of purchasing the thing and paying for it to be shipped. It would be nice if they were more open about this so that you could decide up front.