FUTABA S3070HV MG Digital Servo 6.5kg 0.15sec @ 7.4V This is the Futaba S3070HV High Voltage, Ball Bearing, Metal Gear Equipped, Standard Size S.BUS Servo. Use in EP Heli's 550 size, cyclic, standard size FEATURES Designed for models that require high speed and high torque May also be used in conventional (non-S.BUS) systems Ball bearing equipped output shaft INCLUDES Futaba S3070HV S.BUS Servo, 0.83" (21mm) Round Horn, 1.4" (35.8mm) diameter Round Horn, (39mm) 4-Point Horn, 1.2" (32mm) 6-Point Horn Mounting Hardware and Instructions SPECIFICATIONS Speed: 0.17 sec/60° at 6.6V 0.15 sec/60° at 7.4V Torque: 80.5 oz/in (5.8 kg/cm) @ 6.6V 90.3 oz/in (6.5 kg/cm) @ 7.4V Size: 1.57 x 0.79 x 1.50" (40 x 20 x 38.1mm) Weight: 1.73oz (49g) Power Supply: 6.0 - 7.4V COMMENTS For best performance, use with a 2.4GHz system.