Camp Company Donut Collar Zinc Anode 1-3/4" by Camp Company Sold out $22.84 SKU CAMC8 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out WILL NOT SHIP UNTIL MONDAY APRIL 22nd Shaft Size: 1-3/4" Outside Diameter: 3-1/2" Width: 1-3/8" Copper contact for permanent ground