R1 Magnesium Rudder And Trim Tab Anode, made from high-quality magnesium materials, is a corrosion-resistant alternative to aluminum anodes. The R1 anode has outperformed all other types of anodes in marine environments. It will last twice as long as zincs and up to four times longer than aluminum. Its superior performance is due to its ability to be more reactive with the electrolytes found in salt water and freshwater.
This Is A US Military Grade Magnesium Anode Made To The Highest Quality. Magnesium Is For Freshwater Use.