Aluminum suitable for salt and brackish water.
Magnesium for fresh water only. Size 6" x 4" x 1/2" Hole 1-25/32" x 7/16" x 1/2" Material Magnesium

Price is per unit.Also available in a case of 20

• High-quality, cadmium-free anodes


• Higher protection than zinc


• 2.5 Times lighter than zinc


• Corrodes less than zinc


• Ideal for aluminum hulls


• Installation hardware included

. Please call us if interested in case pricing.