Tecnoseal Rudder Anode - Aluminum - 1-7/8" Diameter. 85" Height: 0.28" Weight: 0.10lbs Full size and weight Rudder Each includes Stainless Steel hex nut and socket cap screw The captive hex nut is a great feature for underwater installations Specifications for Tecnoseal R1AL Rudder Anode: Manufacturer: Tecnoseal Color: Silver Package Contents: Tecnoseal R1AL Rudder Anode Tecnoseal R1AL: R1AL Rudder Anode - Aluminum - 1-7/8" Diameter