This is a cast zinc anode that weighs approximately 3.4 pounds and measures 4" x 6" with a 12" copper wire hanging out for easy tying on to your item you want to protect from rusting. People have used them to protect swimming pool ladders, covers, fences, pipes, boats, and poles. You can upgrade to a longer 10 or 15 foot wire

 

ELEMENT

 

Zn % Balance
Fe % 0.001
Cu % 0.001
Cd % 0.054
Pb % 0.002
Al % 0.240