Check the listing for details. 4Pack RC Car ESC RC ESC 20A Speed Controller for RC Car/Boat Remote Control. Condition: New, Made in China. Listed at 13.63 USD. 1. the plastic gear offers a torque of 1.6 kg/cm (4.8 V) and servo motor ensures stable performance on different models.2. Easy to adjust: the micro servo easy operation with fast response time (0.3 seconds/60 degrees), easy to adjust for stable and reliable performance.3. High reliability: the micro servo is designed for stability and works at temperatures of 0-55 degrees. This servo offers both 180 degree rotation (90 degrees on each side) and a continuous 360 degree rotation function.4. Versatile applications: servo motor specially developed for small RC planes, RC helicopters, RC planes, drones and helicopters; servo RC not recommended for large fixed wing or electric helicopters.Package included：10 Pieces 9G Micro Servo Motor .