HS-40 Economy Nano Servo from Hitec - HRC31040S
The HS-40 economy nano servo is a quality standard servo with high impact nylon gears, a coreless motor and long life potentiometer. Perfect for micro-sized aircraft, sailplanes and helicopters.
Features:

Ideal for micro airplanes, sailplanes, and helicopters
High impact nylon gears
Coreless motor
Long life potentiometer

Includes:

Hitec HS-40 economy nano servo with universal connector
One servo accessory bag (grommets, screws, bushings, horns)