Have had these in the various sizes that they offer, both 15 and 18 inches.
Unlike most motorcycle windshields you don't measure from the top of the headlight to the top of the windshield for these. These start at your handlebar and go up from there with a bit of adjustment up and down for preference. Best to sit on your bike and measure from your handlebar and about the middle of your nose height as you sit on the bike.
Fit and finish of these is absolutely gorgeous. It will help to have two people to install but can be done with one once you get used to them (holding the pieces while tightening, etc can be a bit tricky).
For a handlebar mount windshield they really are nice as the entire thing is chrome plated billet aluminum with matching screws for a very professional look.
Last but not least price. For what you get this really has no competition. Sure you can get a cheaper windshield but it's going to LOOK and FEEL cheaper both in the mounting, hardware, fit, finish, thickness of the shield itself.
These make a nice windshield if you're not afraid to be different and try something new. I did and don't regret it.