This is the HS-5045HB Digital Sport Micro Servo from Hitec.

FEATURES: Ideal for 200mm class Micro-Helis, 2M sail planes, small electric
            park flyers and 1/18 scale cars and trucks
          Standard programmable circuit, programmable features include;
            Dead Band Width            Speed (reduction)
            Fail Safe Position         Direction (CW/CCW)
            Fail Safe On/Off           End Points
          Advanced Gear Train Technology (AGTT)-extra thick Karbonite gears
            on longer flexible shafts that run the entire length of the case,
            stronger than standard nylon gear micro servos

INCLUDES: HS-5045HB Digital Sport Micro Servo, 0.67" (17mm) four-point horn,
            2.1" (54mm) straight horn

REQUIRES: Installing in model and connecting to control linkage and receiver

SPECS:    Size: 0.92 x 0.38 x 0.88" (23.3 x 9.6 x 22.3mm)
          Weight: 0.29oz (8.2g)
          Speed:  0.10 sec @ 6V
          Torque: 17 oz/in @ 6V
          Drivetrain Type: Top ball bearing

                                                                    jxs 7/13/09
                                                                         ir/jxs