Servo Hitec HS-5055MG Manufacturer Hitec Applications Heli/Airplanes Type Digital Sub-Micro Torque 4.8V 18 oz/in (1.3 kg/cm) Torque 6V 22.2 oz/in (1.6 kg/cm) Speed 4.8V 0.20 sec/60 degrees Speed 6V 0.17 sec/60 degrees Dimensions 23mm x 24mm x 11.6mm Weight 9.5g Bearings - Gear Type Metal