Topeak ridecase handlebar stem mountcompatible with ridecase smartphone drybag and topeak phone packs allow ridecase or smartphone drybag to be used on your another bike featuresmaterial machined aluminum engineering grade plastic added features angle adjustable rotates for landscape or portrait viewing compatible with all topeak phone packs size l x w x h 96 x 32 x 24cm3 8 x 13 x 09 stem cap mount 32 x 32 x 24cm1 3 x 13 x 09 handlebar mount adapter weight 48g