Airplane Multi-Pack - 4 Pack of HS-81 Micro Servos from Hitec - HRC31081S
The Hitec HS-81 is a high quality low cost 17g "size" analog servo. It is light weight and a good choice for most planes with 17g servos. The resin gear train is very reliable and the torque and speed of this servo is very good for the price. 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:

Convenient servo four pack is perfect for balsa ARF models
Resin gears
Light weight
Universal connector
High torque

Includes:

Four (4) HS-81 Micro Servos with 6-3\/4" connector wire

Four (4) 7\/8"x7\/8" X-shaped servo horns

Four (4) 1-1\/8" long straight servo horns
Eight (8) brass eyelets

Eight (8) mounting screws

Eight (8) servo grommets

Four (4) servo horn screw