... or aluminum alloy rim 3.Size: 16", 18", 20", 24" 4.Color; Red, blue. bicycle for children ,16 inch Unicycle Model No.: U ... -16A (16", Aluminum rim or stell rim) Features ... 6)Pedal: 3x3/4" in length, steel + ABS 7)Tyre: rubber in color,16" size8) Saddle: Leather with spring 9) Seat post ...