This Kus Waterproof GPS Speedometer Gauge is a little bigger than the other ones listed at 4 3/4 inches diameter overall on the face.

Model # J-MV00866 - the cut out dimension for this one is 4 3/8 inches diameter also Bigger than the other ones listed - the specifics section would not allow me to enter this model number for some reason??? This Gauge is new and comes as a Complete Kit. Odometer, wiring, instructions, and Antenna is the perfect addition to any Boat etc., etc.. With its durable stainless steel and glass construction, this dial is built to last. The illuminated (backlit with red or yellow light,) feature ensures easy visibility during low light conditions.

This KUS Waterproof 60MPH gauge complete kit includes an odometer and antenna + wiring and instructions making it an all-in-one solution for your GPS needs.