I've had one of these mirrors (a slightly different fit for drop-down handlebars) on a touring bike for nearly twenty years and bought another to fit a recently purchased Dahon Sport P8 folding bike. The basic functional design hasn't changed and works well with a very good field-of-view. Very easy to fit although it might, at first glance, look a little complicated as it comes with several unassembled bits-n-pieces. It would help the less technically minded if it were partially assembled. However, in reality, it is child's play and takes less than 10 mins to assemble and fit providing the handlebar end "hole" can be made available for the mirror base to be inserted in. I just needed to pull the plastic plug off the handlebar end. No tool is required beyond the provided Allen key for tightening nuts. I suggest you loosely fit all the parts together before fitting the entire assembly to the bike; This would give you a rough idea on what needs to be done.