Tecnoseal R3 Rudder Anode - Zinc - 3-3/4" Diameter [R3] Brand_ACR Electronics They are known for their

They are known for their durability and ease of use

over-the-air software updates

(1) 5/16"-18 x 1

Fits rails or edge lips from 0

Works with up to 2 control stations

Tecnoseal R3 Rudder Anode - Zinc - 3-3/4" Diameter [R3] Brand_ACR Electronics They are known for theirRudder Anode Material: Zinc Outer Diameter: 3. 63" Height: 0. 52" Weight: 1. 56lbs 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: Material: Zinc Box Dimensions: 2"H x 4"W x 4"L WT: 1. 6 lbs UPC: 8033837068372 Quick Guide (pdf) Owner's Manual (pdf) Brochure (pdf)