This is the Futaba Servo Gear Set for the S9253/S9254 Digital Servo.These gears fit on shafts inside the servo and multiply and deliver torque to the output shaft.FEATURES:Restores servo operation to like-new condition.Nylon construction for long life.INCLUDES:One Futaba Servo Gear Set for the S9253 Digital Servo with 1st, 2nd, and 3rd gears and splined output shaft.