It is 12 inches from top of plate to center hole. You can mount these on buckets, forks or put forks on them.
I also have some for gehl 360, new holland L250, bobcat 371 310 and 440b with the quick attach mount, and maybe some for prime mover, and john deere 375 skid steers. If you have an older smaller machine and i have one that will fit i can list it. Let me know what you have.
The main plate is 3/8 thick steel and the mounts are 1/4 inch. In the picture i have that particular plate mount on a bobcat m371 just so you have an idea of how and where they go. 999998 30 24 17 4.