Martyr Limited Clearance Collar Zinc – 1 1/8″


Easy underwater installation:

Bolt retaining washers prevent the anode from falling off. Choose from two of our stainless steel hardware options.

  • Full shaft contact: 100% circular radius
  • Interlocking halves
  • Extra alloy around the fastener


Protect your boat, Respect our waters

Martyr Anodes provide low-cost marine corrosion protection for boats, marine structures, and boat equipment.

Martyr is the only manufacturer that offers all three alloys that protect your boat from corrosion that can occur in salt water, brackish water and fresh water. Our Traditional (Zinc) anode is for use in Salt Water, Premium (Aluminum) anode for use in salt and brackish water, or Fresh (magnesium) anode for use in fresh water. Our marine anodes are made of a specialized alloy based on the US Mil Spec using only high purity metals.


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