Hitec 31225S HS-225BB Mighty Mini Ball Bearing Servo

From the Manufacturer
The analog HS-225BB represents a good value with performance that rivals other larger and more expensive servos. Ideal for applications that call for a small, lightweight, high speed, high torque servo, the HS-225BB high performance mini servo features a top ball bearing and is built with state-of-the-art SMT technology.