Giant's Contact Switch SL seatpost offers great value, function and versatility. With lighweight internals, different routing options and different lever options the Contact SL Switch post offers all the function you need.Material: AluminiumLength: 350mm / 395mm / 440mmFit: 30.9mm Internal and external routingTravel: 100mm / 125mm / 150mmWeight: 600g (395mm) including remote and cableFeatures: 2x and 1x lever included