... certificate 2.Steel rim or aluminum alloy rim unicycle bicycle one wheel bike HX-B501 2011 HotsFeatures: 1) Size:182) Materials ... 7)Tyre: 16"x1.75, rubber in black or color one 8) Saddle: Leather with spring 9) Seat post: 16cm with ... , 1, 885pcs/40' FCL, 2, 204pcs/40' HQ unicycle bicycle one wheel bike HX-B501 2011 Hots