1、STABLE PERFORMANCE: 20KG servo is equipped with high accuracy potentiometer and high resolution digital chip to ensure stable performance, quick response speed, strong anti interference ability, low noise and fast heat dissipation. 2、PREMIUM SCREWS: RC digital servo has waterproof rubber sealing screws made of first class materials to ensure the longevity of the product. 3、HIGH ACCURACY: RC servo has hard anodized high accuracy metal gears for higher accuracy and longer service life. CNC aluminum center case to enhance heat dissipation and ensure normal operation of servo motor. 4、180 DEGREE ROTATION: Metal gear servo can control angle range 0‑180 degrees with good linearity and high control accuracy. It can rotate 360 degrees when the power is off, which is very suitable for robot joint activities. 5、APPLICABLE OBJECTS: 20KG waterproof digital servo is widely applicable and can be widely used in robots, robotic arms, climbing cars, remote control boats, remote control aircraft, etc. Item Type: 20KG Servo Shell Material: Aluminium Alloy, Plastic Servo Size: Approx. 54x20x45.5mm / 2.1x0.8x1.8in Teeth: 25T Control System: PWM Control (1500 Usec for Center Point) Pulse Width: 500‑2500μs Operating Voltage: 4.8‑7.4V Operating Temperature: ‑20C° to +60C° Steering Angle: 180 Degrees Torsion: 6V 17.2kg.cm, 7.4V 20kg.cm Rotate Speed: 6V 0.16 Sec 60 Degrees, 7.4V 0.14 Sec 60 Degrees Deadband: 4usec Plug: JR Plug Application: for RC Car, Robot, Ship, Manipulator, etc. 1 x Servo 1 x Metal Servo Arm 4 x Plastic Servo Arm 4 x Screw Barrel 4 x Rubber Pad 6 x Screws