The simple solution to roadside inflation. Thread the cartridge on, press it onto the valve, and air is in your tire. No-nonsense approach that you can count on to get you home in a pinch. Aluminum body with rubber insulators Spring regulated air flow Light action spring Hardened tool steel puncture pin Item Specifications Color Black Defined Color Black Gas CO2 Included Cartridge No Silca Eolo III CO2 Regulator CO2 and Pressurized Inflation Device UPC: 853740005527