Material: rim: high power double wall aluminum fork: made from steel tube, chromed the one tube above: 1*0.06inch (25.4*1.5mm) the two tubes below: 0.98*0.05inch (25*1.2mm) tire: black rubber tire, 2.125"width, Nylon saddle: PVC quick release: made from aluminum crank: cotterless crank, made from steel The seat is adjustable and the max. height is about 40". Fit most adults and children who are under 75kg/165lbs. It doesn't come with a stand.