Portland Design Works' Shiny Object is made from aluminum for strength and low weight so you won't think twice about bringing this ride essential along with you. A control knob keeps you in charge of the pressure, it takes threaded Co2 cartridges (sold separately) and it fits both Presta and Schrader valves. - Inflator only height: 44 mm (1.75") - Inflator only weight: 40 g (1.5 oz)