HS-5085MG Digital Metal Gear Micro Servo from Hitec - HRC35085S
The Hitec HS-5085MG is a high quality 17g "size" digital servo with Metal gears. This servo is a good choice for people looking for the perfect blend of durability, accurate centering, high resolution, and relatively low weight. The Metal gear train and top ball bearing provide extreme reliability and the servo is digital for ultimate resolution. The servo features a universal connector which works with nearly all receivers. It will fit Futaba J, Hitec S, JR, and Airtronics Z-type Connectors. See specifications tab for full specs.
Features:

Metal gears
Top Ball Bearing
Digital
Universal connector
Excellent centering

Includes:

One HS-5085MG servo
Two servo arms and one wheel
Two brass eyelets
Two mounting screws
Two servo grommets