The JX Servo PDI-1109MG is a standard small 9 gram digital metal gear servo which is perfect for varios  model aircraft, RC cars and other RC projects. The JX PDI-1109MG is a high-performance sub-micro digital servo, with precise jitter free response. It reacst very quickly and supports 4.8-6.0V input voltage.  The package includes 4 different servo arms to fulfill your needs.