CO2 Charger Portable Adaptor w/Readout. Stainless steel construction. Rechargeable Cylinder can hold one 12g cartridge of compressed CO2 and has been engineered to not leak gas for extended periods. With readout show. Size: 16.2cm length (2.93cm diameter). Holds one 12g Cartridge. Metal body can withstand: 130 kg/cm² pressure at 30-150?C. Colour may vary