The Air Chuck Replacement CO2 Cartridge by AUNER comes as a set of 2 pieces. These cartridges are designed to provide quick and efficient inflation for a variety of tools and equipment, making them an essential component for any workshop or service station. Ideal for use with tire inflators and other pneumatic devices, these high-quality CO2 cartridges ensure reliable operation and optimal performance. Whether you're performing emergency repairs or routine maintenance, the Air Chuck Replacement CO2 Cartridge offers the convenience and dependability you need. Made with durable materials, these cartridges are built to withstand the demands of frequent use.