This 16g non-threaded cartridge is a CO2 inflator manufactured by Genuine Innovations and comes in a black casing. It is lightweight and portable and weighs in at 0.3 pounds. It has a dual valve that makes it compatible with Presta valves, for which it is pushed on, and Schrader valves, for which it is screwed on. This non-threaded cartridge is ideal for cycling applications. For reference, the MPN is 2428, MR011919, PU8043.