This is the S9256 Digital Servo used with the Futaba GY611 Gyro, FUTM0825.

FEATURES: Aluminum case with heat sink to help cool motor
          Special servo for the GY611. Compatible with Super Narrow Pulse of
            (760µs) drive.
          Nylon gears
          One year warranty

INCLUDES: Four rubber grommets to isolate vibration
          Four brass eyelets
          Four phillips head self-tapping mounting screws
          One large servo wheel 35mm in diameter
          One star shaped (six arms) servo arm 32mm accross
          One X-shaped servo arm 39mm across
          One year limited warranty

REQUIRES: Radio system using Futaba "J" type connectors

SPECS:    Dimensions: 1.6 x 0.8 x 1.4" (40 x 20 x 37mm)
          Weight: 2.0oz (57g)
          Speed:  0.06 sec/60° @ 4.8V
          Torque: 47 oz-in (3.4 kg/cm) @ 4.8V
          Pulse Width: 760µs
          Frequency: 270Hz

COMMENTS: The following parts are available:
            FUTM3443  FGS9251 COMPLETE SERVO GEAR SET S9251 (with metal final
              gear)
            FUTM3502  FGS9251 1/2/3 GEAR SET (without metal final gear)
            FUTM2030  for ht eservo horn

                                                           Updated JBM 12/14/05
                                                                    jxs 9/27/05
                                                                         ir/jxs
                                                            updated jpg 5/11/07
                                                                    jpg 12/9/09