The Genuine Innovations Proflate Elite removes any doubt of over inflation while using C02 cartridges. It is compatible with 12g threaded,16g threaded and non threaded, and 20 and 25g threaded C02 cartridges. Simply drop the cartridge into the cup, or screw the cartridge into the head, press onto the valve stem, and pull the trigger. A pop out pressure indicator is automatically activated for controlled inflation. Additionally, an EZ Connect system grips the valve when inflation begins, which allows for one handed operation. The cartridge cover also means no more frozen fingers. The Genuine Innovations Proflate Elite works with both Schrader and Presta valves. It includes two 16g non threaded cartridges.