1. Versatile: 20kg servo with stable performance is suitable for model aircraft, fan aircraft, model boats, toy cars, IOT homes, intelligent robots, etc. 2. Efficient and Low Power Consumption: The servo operates with high efficiency, low noise, and low power consumption. It is also easy to install and uninstall. 3. Robust Construction: Constructed with high-grade plastic and a semi-aluminum casing, the servo undergoes fine processing to ensure durability and long-lasting performance. 4. High Load Capacity: The metal gears can withstand higher loads, ensuring the RC waterproof servo kit operates smoothly even under heavy loads. 5. Highly Durable: Gear steering servo with 5 different servo arms is made of high-grade and hard alloy, equipped with metal gears, providing high accuracy. Item Type: RC Servo Shell Material: Aluminum Alloy + Plastic Size: Approx. 40.5x20.2x38mm/1.6x0.8x1.5in Working Voltage: DC 4.8V to 6V Highest Torque: ≥21.8kgf-cm at 6.0V Working Speed: ≤0.18sec/60° at 6.0V Applicable: Model aircraft/fan aircraft/model boat/toy car/IOT home/intelligent robot, etc. 1 x Servo 5 x Servo Arms 4 x Vibration Damping Pads 4 x Screw Cylinders 5 x Screws