CO2 inflator Our Red Zeppelin CO2 bike inflator features rugged metal construction and the Airflation(TM) control knob so you can be guaranteed reliable and accurate inflation. It accepts all sizes of threaded cartridges and works with Presta and Schrader valves without the need for an adaptor. It'll make quick work of road side repairs. - Precision-machined body and head with Airflation Control 2.0TM knob for improved reliability and ease-of-use - Threads directly onto Presta or Schrader valve without adapter - Compatible with threaded cartridges - Small size fits in saddle bag or jersey pocket - Size: 48 x 40 x 25 mm - Weight: 56 grams