... children bicycle / kids bike / bicycles size of kids, children bicycle12", 14", 16",18",20"color of kids, children bicyclered, blue, yellow, black ... welding, separate handletyre of kids, children bicycle12"x1.75, 14"×1.75,16"x1.95, 20"x1.75 or1.95chain wheel & crank ... of kids ,children bicycle12" 24Tx89, 14" 24T×88, 16" 28Tx102, 18' 28T×102, 20" 28Tx127 CP/EDcrank of ...