1. material and appearance: this is a rudder seat made of brass, which has better strength and durability, and looks good; 2. Machining: This is a CNC machined part with precise data, change the design fixing method, add two fixing screw holes, more sturdy. 3. replacing the original TRX4M plastic parts and MEUS front and rear axle housings to improve steering precision; 4. Product list: 1*servo mount, 5*screw