Alloy inflator head has control valve to regulate CO2 release \n - Fits Presta valves only \n - Full grain leather sleeve is vegetable tanned and conditioned with natural oils and waxes \n - Inflator height: 20mm (.79") \n - Leather sleeve length: 55mm (2.25") \n - Weight (head only): 12g (.42 oz), \n - CO2 cartridges sold separately