Humminbird Quick Mount System Matrix 500 Ms M

I had to replace my mount because it broke at the hinge on one side. Might be from rough use and drying out from the sun. These mounts appear to be pretty standard when it comes to the part that connects to the fish finder. It appears to me that the difference between the models is that they have a different hole pattern in the base. It also appears that if you stick with same color code, you will get the same base. They are color coded with different colored caps over the hinges ie... yellow, black or blue. I, of course, got the wrong one but was able to line up at least two holes. Good enough for a retired gov't worker.

The part shipped quickly and was exactly what was needed to replace the broken mount. So glad they still make them.