For Mercruiser Alpha One Gen II Mounts on Trim Cylinder
Thickness: 1/2″
Mounting Holes: 1-1/2″ center-to-center.
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:

Canada Metals CM806189A
Performance Metals 00042A
GLM 12703
Technoseal 00817AL
Camp 806189
Reliance AMD-806189