This is the Futaba BLS254 Brushless Heli Rudder Servo.
          When using with the GY520 you must make sure you change to
                      the correct mode in the gyro software.

FEATURES: Designed for 3D helis
          Standard size
          Equipped with two ball bearings
          30% faster response than standard digital servos and five times
            longer lasting than servos with brushed motors
          Same power consumption as brushed digital servos
          One year limited warranty

INCLUDES: Futaba BLS254 Brushless Heli Rudder Servo with universal connector
            (21mm) diameter round horn, 1.8" (45mm) diameter round horn 1.2"
            (32mm) diameter 6-point horn, 1.5" (38.8mm) diameter 4-point horn
            mounting screws, eyelets and grommets

REQUIRES: Installing in heli, connecting linkage and connecting to receiver

SPECS:    Torque: 53 oz-in (3.8kg/cm) @ 4.8V
          Speed: 0.06 sec/60° @ 4.8V
          Size: 1.60 x 0.80 x 1.50" (40 x 20 x 36.8mm)
          Weight: 1.80 oz (51g)
          Pulse width: 1520
                                                                    jxs 6/24/09
                                                                         ir/jxs