Martyr (Canada Metal Pacific) Part #Cmzhc5Az8X4X3/4 Hull AnodePleasurecraft Hull Zinc Anodes Hull Anode - Zinc. Hole Dimension Is The Distance Between Holes. Attributes: Hole = 4-3/8" Size = 8" L X 4" W X 3/4" HPackage Quantity = 1FeaturesNewSpecificationProduct DetailSize SmallDimensions xx..