Just buy what you need. Lezyne packages their well made 16 gram threaded CO2 cartridges in this simple 2 pack. Top quality, clean threads ensure that your cartridge will work with any threaded inflation head design.

The 16 gram cartridges size are our best-selling size, simply because they work well with both road and mountain. One 16g cartridge is capable of inflating up one 700c road tire to 130psi, a 26" mountain tire up to 30-40psi and a 29" mountain tire up to 30psi. They are not physically much larger than the 12g cartridges, but offer more appropriate air volume. They feature threaded tops that will fit all modern inflation devices. Construction is durable steel that will not leak and can be recycled once depressurized.