Zinc Reliance Shaft Anode manufactured in Canada by Metal Distributors Limited to US military specification A 1800 K. Copper studs on the anode ensure good electrical contact to the prop shaft, giving the best protection to your stern gear. 

 Zinc Shaft Anode Large for 2 inch prop shafts

Interior copper pads for better connection to the prop shaft

4 fixing bolts

90mm outside diameter

85mm long

1500g

Also available in a smaller version

 For use in saltwater