The tate labs bar fly 20 mount for garmin designed with a low profile body for aerodynamic properties and places your garmin computer directly infront of your stem whether you have a garmin 200 500510 or 800810 you39ll be able to use the mount and with it39s clever dual mounting position you can choose to have it further out infront or closer to the stem of your bike with only one screw to tighten which holds the garmin computer in place you have no worries about the mount falling