Servo Futaba BLS451 Manufacturer Futaba Applications Heli/Airplanes Type Brushless High Speed/Torque Torque 4.8V 118 oz/in (8.42 kg/cm) Torque 6.0V 147 oz/in (10.6 kg/cm) Speed 4.8V 0.13 sec/60 degrees Speed 6.0V 0.10 sec/60 degrees Dimensions 41mm x 38mm x 20mm Weight 58g Bearings Dual Ball Bearing Gear Type Metal