Description:    Designed for rudder control in Futaba high end gyros Brushless motor Handles up to 2S LiPo battery power INCLUDES: Futaba BLS256HV Servo 0.83" (21mm) Diameter Round Horn 1.8" (45mm) Diameter Round Horn 1.6" (38.5mm) Diameter 4-Point Horn 1.2" (32mm) Diameter 6-Point horn Mounting Hardware REQUIRES: Installing in heli, connecting linkage and connecting to gyro Specs and Features Speed: 0.055 sec/60 degree at 6.6V, 0.050 sec/60 degree at 7.4V Torque: 61.1 oz/in (4.4 kg/cm) at 6.6V, 69.5 oz/in (5.0 kg/cm) at 7.4V Size: 1.57 x 0.79 x 1.45" (40 x 20 x 36.8mm) Weight:2.15oz (61g) Power Supply: 6.0 - 7.4V DC COMMENTS The BLS256HV is designed only for gyro rudder control. Dead band is set as narrowly as possible. When the fuselage is static, the servo may jitter. This condition is normal. Very high current drain is normal at startup. Always use a 6V - 7.4V battery.