Our famous boat zincs, now in metric! Sea Shield Marine metric streamline collars provide easy size verification, are pressure die cast and conform to the highest Mil-Spec standards. Our Streamline Collar shaft anodes are available in Zinc, and install with just 2 deep-slotted stainless steel machine screws providing maximum torque, and are extremely durable. Allen Cap Screws are available upon request. The innovative plastic keepers provide easy installation and prevent fallout.
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