Designed to help guard against corrosion of underwater gear such as, propellers, shafts, and rudders which are vital to the vessel and are expensive items to replace; the failure of a propeller or rudder could have disastrous consequences.

The anodes fit on the hull of the boat with the two fixing holes.

Appears to be in good used condition - Heavy hence postage

Please see all pics as they do show condition and form the largest part of the description