The 16g threaded CO2 cartridge is a compact and lightweight solution for quickly inflating bike tires on the go. The cartridge is filled with compressed carbon dioxide gas, which can be easily released by attaching it to a compatible inflator head and turning it to puncture the seal. This releases the gas and allows it to rapidly inflate the tire to the desired pressure. The 16g size is a popular choice for road and mountain bike tires and can typically provide enough pressure for one tire inflation. The threaded design ensures a secure fit to prevent any gas from leaking out during use.