This is the S9206 High-Torque Helicopter and Airplane Servo from Futaba.
This servo is used for R/C airplanes and helicopters. (4.8V ONLY)

This servo can produce high-current draw from your batteries.
If using NiMH or Li-Po batteries, make sure they are capable of delivering sufficient Amps.

FEATURES:
2 ball bearings
Coreless motor
Metal gear
High-torque
Dust and water resistant
One year warranty

INCLUDES:
One S9206 High-Torque Helicopter and Airplane Servo with a
Futaba J male connector
Four brass eyelets
Four black one-piece rectangular rubber grommets
Four 2 x 11mm servo mounting screws
One small X-shaped servo horn
One large round servo horn
One 6-arm servo horn

SPECS:
Speed: 0.19 sec/60 deg @ 4.8V
Torque: 132 oz/in @ 4.8V (9.5 kg/cm @ 4.8V)
Length: 1.6" (41mm)
Width: 0.8" (20mm)
Height: 1.5" (38mm)(without the servo horn)
Weight: 1.9 ounce (53 grams)
Connector: Male "J" type with approx. 5" wire

COMMENTS:
For replacement metal gears set use FUTM3447 (2 are metal & 2 are nylon)
For all nylon gears customer can use FUTM3340