Premium aluminum Martyr anode is designed to protect boat’s rudder or trim tab from corrosion in salt or brackish water.

3 3/4 in. Aluminum Rudder Anode | Canada Metals CMR03AL

• Rudder and trim tab anode
• Designed to mount to rudders and trim tabs to protect from the corrosive effects of stray current
• 3 3/4 in. diameter
• Sold as 2 halves held together with a stainless steel bolt and nut
• Each half is 1/2 in. thick
• Aluminum anode is for use in brackish and salt water applications
• Martyr anodes are made of a high purity specialized alloy based on the US Mil Spec