Silca Eolo IV CO2 Inflator . 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. The full metal construction of the EOLO IV contains no plastic parts and is manufactured entirely from 6063 series aluminum and stainless steel. Knob regulates flow rate Hardened tool steel puncture pin ensures smooth operation in all conditions over many years Item Specifications Cartridge Type Threaded Color Black/Red Defined Color Red Included Cartridge No Silca Eolo IV CO2 Inflator Pump Part UPC: 810093160587