1. new model children bicycle, one wheel 2.Steel rim or aluminum alloy ... ", 20", 24" 4.Color; Red, blue..... New model children bicycle, 16",18",20",24" unicycleModel No.: U-16A (16", Aluminum ... Materials: Aluminum or stell rim, chromed frame (made from steel tube) 3) Fork: Clamp type, electro-plated or painted finish ... , 1572s/40' FCL, 1734pcs/40' HQ new model children bicycle 16' 18' 20' 24' unicycle ...