ITEM NAME:20KG DS3218MG Digital Servo Steering Gear Metal Gear Torque For RC Car Robot Description Features: 100% brand new and high quality. Steering gear provides higher precision and better fixed force. Fine workmanship ensures the longevity of the product. Good performance servo, large torque, up to 20kg/cm. Can be used for robots, mechanical arms, climbing cars and remote control toys. Specifications: Material: Metal Color: Black & Red Size: Approx.40*39*19mm Voltage: 4.8V-6.8V Operating Speed: 0.16s/60Â °(5V), 0.14s/60Â °(6.8V) Stall Torque: 19kg/cm(5V), 21.5kg/cm(6.8V) Motor Type: DC Motor Gear Type: Copper & Aluminum Working frequence: 1520ÃŽ ¼s/333hz Package Include: 1* 20kg Digital Servo 1*Â 25T Adjustable Metal Servo Arm Note: Please allow minor error due to manual measurement. The colors may be a little difference for the different monitor display..1 20kg Digital Servo. Stall Torque: 19kg/cm(5V), 21.5kg/cm(6.8V). Good performance servo, large torque, up to 20kg/cm. Gear Type: Copper & Aluminum. Steering gear provides higher precision and better fixed force.