Burley Piccolo 7 Speed Trailercycle. Durable 4130 CroMoly steel frame yields a smooth ride. 7-speed Shimano drive train with twist-shifter Front splash guard. Patented hitch system with ball-bearing guided pivots provide shimmy-free performance; hitch sits perpendicular to ground and directly above lead cyclist's rear axle for superior handling and stability. Double-locking hitch engagement mechanism for extra security. Moose rack included with each trailercycle; additional moose racks available for use on multiple adult bicycles .Adjustable handlebar and seatpost fit broad range of child sizes; 20" wheel size Include rear as well as wheel reflectors for visibility