... 2.attractive design3.delivery on time 2012 best beautiful children bicycle / kids bike / bicycles size of kids, children bicycle12", 14", 16 ... "×1.75,16"x1.95, 20"x1.75 or1.95chain wheel & crank of kids ,children bicycle12" 24Tx89, 14" 24T×88, 16 ... or UCPchain cover of kids, children bicyclefull chain cover with sticker or 9-form chain coverbrake of kids, children bikeF/R Caliper ...