Martyr CMR02AL 2-13/16" Aluminum Rudder Trim Tab Anode with Allen Screw

The Martyr CMR02AL is a 2.81-inch outer diameter aluminum rudder and trim tab anode designed to protect your boat from corrosion that can occur in salt, brackish, or fresh water environments. This premium-grade anode is pressure die-cast and manufactured from a specialized alloy based on US Military Specification standards, offering corrosion protection and longevity unmatched by the competition.

Key Features:

• 2-13/16 inch (2.81 inch) outer diameter with 1/2 inch thickness
• Sold in pairs with stainless steel bolt and nut included
• Allen screw fastening system for secure installation
• Easy underwater installation with bolt retaining washers that prevent the anode from falling off
• Aluminum is lighter, works better, and lasts up to 50% longer than zinc in saltwater
• Rigorously tested in state-of-the-art laboratory to ensure superior quality

Unlike zinc anodes, aluminum provides excellent protection in both salt and brackish waters, and even offers some protection in freshwater environments. Aluminum makes the best general-purpose anode for vessels which frequently travel back and forth between fresh and salt waters. These sacrificial anodes protect vital metal components on your boat's rudder or trim tab by corroding preferentially, extending the life of expensive marine hardware.