No confusion. Just pointing out that a lot of folks think the 12gm cartridges will fill an entire 140/80-17 tire. As is, one of those monster 68gm cartridges will only get it to about 20 PSI. I carry two of the cartridges just in case I have trouble seating the bead. All my rims have been converted to tubeless and if I can't seat the bead I'm toast.