Shaft Anode Material: ZincOuter Diameter: 7.76″Inner Diameter: 6″Height: 3.504″Weight: 12.00lbsHoles: 4 Specifications: Material: Zinc Box Dimensions: 4″H x 8″W x 8″L WT: 12.3 lbs UPC: 8059617816223 Quick Guide (pdf)Owner’s Manual…Continue readingTecnoseal X21 Shaft Anode – Zinc – 6″ Shaft Diameter [X21]