COR-in 3/8 inch NPT x 3 inches Complete Zinc Pencil Anode wiht Brass Plug

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COR-in 3/8 inch NPT x 3 inches Complete Zinc Pencil Features

• 3" Zinc Pencil Anode with Steel Core

• 3/8" NPT Brass Plug

• Rod diameter: 1/2" Rod thread: 7/16 20 NF Wrench Size: 11/16"

About COR-in 3/8 Inch NPT X 3 Inches Complete Zinc Pencil

3/8" NPT Brass Plug x 3" length of zinc rod complete. Rod diameter: 1/2" Rod thread: 7/16 20 NF Wrench Size: 11/16" Also known as sacrificial anodes, pencil anodes or engine anodes, these zinc rods are consumed by any electrolytic action that would otherwise attack and corrode your valuable equipment. A reinforcing steel core holds zinc in place until it's completely consumed. They come with NPT hex brass plugs. Zinc rods protect from corrosion and scaling in hot water applications. Ideal for use in salt water.