... motor: 17 gram with metal and plastic gears, 6kg torque, 9 kg torque, 11 kg torque, 13 kg torque, 15 kg torque3) analog and digital4) high torque ... : 17 kg torque, 20 kg torque, 33 kg torque, 40 kg torque etc5) We can offer OEM service high torque rc servo motor