Servo Hitec HS-425HD Manufacturer Hitec Applications Airplanes Type Analog Standard Torque 4.8V 46 oz/in (3.3 kg/cm) Torque 6.0V 57 oz/in (4.1 kg/cm) Speed 4.8V 0.21 sec/60 degrees Speed 6.0V 0.16 sec/60 degrees Dimensions 40mm x 36.5mm x 20mm Weight 45.5g Bearings Ball Bearing Gear Type Nylon