The Max-Prop Anode has a metal ring molded into it. This metal ring goes around the entire diameter where the screws attach the Anode to the propeller. This ring disburses the electrical current through the entire Anode giving it a much longer life.
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.
www.P65Warnings.ca.gov