Welcome to our store! STABLE PERFORMANCE: This 20KG servo is equipped with a high-precision potentiometer and high-resolution digital chip to ensure stable performance, fast response speed, strong anti-interference ability, low noise, and rapid heat dissipation. PREMIUM SCREWS: The RC digital servo features waterproof rubber-sealed screws made from premium materials to ensure product longevity. HIGH ACCURACY: The RC servo has hard anodized high-precision metal gears for higher accuracy and a longer lifespan. CNC aluminum middle case to improve heat dissipation and ensure the normal operation of the servo motor. 180 DEGREE ROTATION: The metal gear servo can control the angle range of 0‑180 degrees with good linearity and high control precision. It can rotate 360 degrees when the power is off, making it very suitable for robot joint activities. APPLICABLE OBJECTS: This 20KG waterproof digital servo is widely applicable and can be used in robots, robot arms, climbing cars, remote-controlled boats, remote-controlled airplanes, etc. Item Type: 20KG Servo Shell Material: Aluminum Alloy, Plastic Servo Size: Approx. 54x20x45.5mm / 2.1x0.8x1.8in Gears: 25T Control System: PWM Control (1500 Usec for Midpoint) Pulse Width: 500‑2500μs Operating Voltage: 4.8‑7.4V Operating Temperature: ‑20C° to +60C° Control Angle: 180 Degrees Torque: 6V 17.2kg.cm, 7.4V 20kg.cm Rotation Speed: 6V 0.16 Sec 60 Degrees, 7.4V 0.14 Sec 60 Degrees Dead Band: 4usec Connector: JR Connector 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 If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.