All shaft zincs have a copper contact on each half for a permanent electrical connection. Models X-1 through X-5 have two stainless steel allen screws. Models X-5A and larger have four sets of screws. Stainless steel nuts are pressed in.

Shaft Anodes made of Mil-Spec Zinc Alloy.

• Thse are the Best Choice for salt water vessels.
• Regular and "Heavy" anodes.