S3117 High Torque Nylon Gear Sub-Micro Servo from Futaba - FUTM0417
The S3117 sub-micro is a basic servo with excellent torque and speed that works well for 1400mm wingspan and smaller airplanes, small EDF jets, and 200 to 450 size helicopters.
Features:

Quality basic servo perfect for 1400mm and smaller airplanes and small EDF jets

Delivers excellent torque and speed for its small size, light weight 3-pole motor

One year warranty

Includes:

1x S3117 high torque nylon gear sub-micro servo
1x .75" x .71" (20mm x 18mm) 4 Arm servo horn (pre-installed)
1x 1.5" x .75" (40mm x 20mm) 4 Arm servo horn
1x 0.79" (20mm) diameter round servo horn