Martyr CMR Rudder/Trim Tab Anodes

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.

Needed these to put on our trim Tabs . Needed them quickly to put our boat in the water for the season . They arrived in one day .

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.

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.

Very slow delivery based on order date, but finally arrived. As expected, will work nicely on my trolling motor with minor modification.

Perfect, as always

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.

Easy installation and good quality

they work great when you need to add Anodes to your boat. fast shipping.

Item as advertised.