You must be logged in and verified to contact the designer.
This mount is designed specifically to house a Cateye computer. It snaps on, between an aerobar shifter, and the aerobar itself. The base of the speedometer slide up through the bottom of the square opening, then the speedometer clips in on top. Using just the base, and the speedometer itself, this model saves weight by using less material, and is very aerodynamic.