TECNOSEAL TEC-DOK - US MILITARY GRADE ZINC
DOKA Sea Strainer Zinc Anode (656934)
Length: 3-3/8" Width: 1-1/4" Thickness: 1/2" Hole Distance: 1-13/16" center-to-center Mounting screws: #10 flathead, not included Weight: 0.3 lbs