Genuine innovations air chuck compact co2 inflator the perfect product for the racer or for those keen to have the lightest kit possible the all metal air chuck elite weighs a scant 16g using push to inflate technology the air chuck elite slips straight onto schrader or presta valves and is now supplied with a fat 20 20g cartridge and a 16g cartridge for greater versatility not currently available for sale as item is subject to customs prohibition