Sturdy construction solid seat sits right over the rear axle. Two holes needed to be drilled under the main seat which must be completely removed in order to install. The rest is easy enough with just an Allen key and wrench as tools though. Beautifully solves the issue of having to hang the license plate and stop/plate light from the rear fender where it is heavy and precarious and prone to rattling over bumpy ground. All easily moved to the back of the seat where they are much sturdier and steadfast, no more rattles and much better vision of the stop/tail/plate light from behind, leaving the fender ,much lighter and rattle free at last, hoorah! Makes this beautiful looking bike even more beautiful still. Lengthens the entire frame, It is the perfect accessory that I have been waiting for since purchasing the scooter. Improves it's looks 110%. https://www.youtube.com/watch?v=S6NjetECh6E