Rudder Servo Mount H50038Instruction:Use for T-REX 500.Specification:Rudder servo mount x 2(Φ16x27.2x5.6mm)Rudder servo bracket x 1(52.5x33.45x1.6mm)Self tapping screw x 2(T2.6x10mm)Washer x 2(Φ2.6xΦ5.8x0.6mm)