Features: Good performance digitalservo, suitable for RC car, robots. Precision gears, more wear-resistant, not easy to collapse and sweep teeth, etc. Including steering gear accessories package, spare gear and shaft pin, 25t metal steering gear arm. A great choice for university professors and students who are interested in developing software for robot parts. Tailored for RC hobbyists to provide different experiences and delight. Warranty: If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: Item: Digital Servo 20KG Servo 180 Degree: Number of Teeth: 25t Deadband: 2 s Operating frequency: 1520 s / 330hz Speed (6V): 0.08sec/60 Speed (7.4V): 0.07sec/60 Speed (8.4V): 0.06 sec / 60 Locked Rotor Torque (6V): 18kg.cm Locked Rotor Torque (7.4V): 20kg.cm Locked Rotor Torque (8.4V): 22kg.cm Weight: 68g Connecting Line: Jr300mm Bearing: Inlet 2BB Size: 41*20*28.5mm Package information: Package Size: 8.5*6.5*3.5cm Package Weight: 100g Gift Box Package Packing List: 1 *20kg Digital Servo 1* Some Fittings