We now sell Innovations 16 gram threaded CO₂ Cartridges as singles. Each cartridge has enough CO₂ to inflate a 700 x 23c tire to roughly 100psi. On the trail, one 16g cartridge will inflate a typical 26" mountain bike tire to roughly 40psi. We generally like to ride with a couple cartridges for added insurance against unforeseen events, like double punctures. Or you may need to loan one to a friend in need.
Please Note: Per UPS regulations, ORM-D items such as this must ship via surface transport: UPS Ground or UPS Standard (Canada). We are unable to ship ORM-D items Internationally, or to Alaska, Hawaii or Puerto Rico.