Savox .08/347.2 7.4V HV Coreless Digital Servo, Standard Super fast for its size at .08 sec/60 Super strong and precision made unique steel gears provide high level of durability and survives heavy use Coreless motor brings output performance to the top level  smoother, faster, and more efficient Special design for high voltage native 2s LiPo operation Our servos are totally green  from materials to production, these servos are environmentally friendly