The Old Style GoPed T handle hinge pin is plastic and holds your handlebar to the FTG assembly with the non threaded hole.
GoPed part Number 1056
Does not work (on new style) if there is a screw at the top of your ftg. Secures Handlebar T-Bar assembly to Goped scooter FTG and the front forks. 1/2" OD x 3/8" ID x .99"L.
