Martyr CMR Rudder/Trim Tab Anodes

Seems good

Boat annoids

small just the right size for my application great value

Excellent product. These come as two flattened domes of zinc with a stainless steel bolt passing through the center of one to thread into a captive stainless nut in the second. By design, they sandwich around the item to be protected from corrosion, usually a boat keel. The zinc corrodes away as a sacrificial anode, which protects other metals while the zinc lasts. I got these for corrosion protection, but not for a boat. I installed them on a gas grill to find out if they will stop the latest set of replacement burners from corroding away so quickly.

They only come with one screw so if you are splitting them make sure you get extra hardware (screw and nut). I was able to hammer a nut into the recess on one and make them identical so I could put them on my trim tabs.

I have been using these for years, they hold up extremely well in what I would consider a hot Marina with lots of other boats nearby during moorage. I replace these annually for piece of mind, but, they could realistically last several years depending on your use, just keep a stainless steel small brush and hit it with that when you have your boat on the trailer.

fast shipping,correct item

Very good product. Fast shipping.

This item it two pieces sandwiched together. I separated them to use 1/2 on each trim tab. It only comes with hardware for one. I just used my existing bolt for the other half.

Lasts way longer than most anodes!