For 40-90 HP
Diameter: 1″
Thickness: 5/8″
Mounting Hole: For M6 flat head screw
EMP Aluminum anodes conform to Mil-Spec A-24779(SH)

also crosses with:
Canada Metals CM6884525101A
Performance Metals 00128A
GLM 12755
Technoseal 01111AL
Reliance AMD-688-45251-01