1、Performance: With anti blocking and anti burning protection function, with waterproof function. 2、CNC precision gear, it is more wear-resistant and not easy to break and sweep teeth. 3、Metal gear high torque for RC car, crawler and robot. 4、Great choice for university professors and students who are interested in developing software for robot parts. 5、If there are any problems, please contact our store in time. We will give you a satisfactory solution. Features: Performance: With anti blocking and anti burning protection function, with waterproof function. CNC precision gear, it is more wear-resistant and not easy to break and sweep teeth. Metal gear high torque for RC car, crawler and robot. Great choice for university professors and students who are interested in developing software for robot parts. If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: Item: 50kg Digital Servo Number of Teeth: 25T Rotation Angle: 180 ° Deadband: 2 μ s Operating Frequency: 1520 μ s / 330hz Motor: High Performance Brushless Motor Speed (6V): 0.14sec/60 ° Speed (7.4V): 0.13sec/60 ° Speed (8.4V): 0.1 sec / 60 ° Locked Rotor Torque (6V): 40kg cm Locked Rotor Torque (7.4V): 45kg cm Locked Rotor Torque (8.4V): 50kg cm Bearing: Imported 2BB Shell: CNC Aviation Aluminum Alloy Gear: All Steel Teeth Size: 40.5*21*42mm Package Information: Package Size: 9.2*3.2*6cm Package Weight: 160g Gift Box Package Packing List: 1* 50kg Digital Servo 1* Some Other Parts 1* 50kg Digital Servo 1* Some Other Parts