Welcome to the store! 1. The rudder is made of anti-rust and anti-corrosion 6061 hard aluminum alloy, it has high strength and durability. 2. The 75mm/3in rudder plate is suitable for electric boat or methanol boat within 60cm/23.6in. 3. The 95mm/3.7in rudder plate is suitable for electric boat or methanol boat within 85cm/33.5in. 4. It is made of all CNC machines to guarantee the best fit. 5. It is mainly used in electric boat, methanol boat steering and engine water cooling design. Features: 1. The rudder is made of anti-rust and anti-corrosion 6061 hard aluminum alloy, it has high strength and durability. 2. The 75mm/3in rudder plate is suitable for electric boat or methanol boat within 60cm/23.6in. 3. The 95mm/3.7in rudder plate is suitable for electric boat or methanol boat within 85cm/33.5in. 4. It is made of all CNC machines to guarantee the best fit. 5. It is mainly used in electric boat, methanol boat steering and engine water cooling design. Specification: Item Type: RC Accessory Material: 6061 Hard Aluminum Alloy Optional Color: Silver, Blue Optional Rudder Plate Depth: Approx. 75mm/3in, 95mm/3.7in Package List: 1 * RC Rudder Note: Please allow a slight 1-3mm deviation for manual measurement. Thanks for your understanding. Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!