1. Unicycle with CE certificate 2.Steel rim or aluminum alloy rim 3.Size: 16", 18", 20", 24" 4.Color; Red, blue, ... chrome,etc U-18A (18", Aluminum rim) Features: 1) Size: 18" 2) Materials: Aluminum rim, chromed frame (made from steel tube) 3 ... : 691pcs/20' FCL, 1432pcs/40' FCL, 1580pcs/40' HQ Acrobatics bicycle(CE Certificate)