This is a high quality but really low-cost servo for all your mechatronic needs. It has a high quality and high torque. It comes with a 3-pin power and control cable. With this two servos and Bracket for servo, you can build a 2 degrees freedom Servo mount assembly.
3 pole ferrite, all metal gear. Top ball bearing
location of each pin: red (+),brown (-), yellow (signal).
Worked perfectly. It has good torque and is pretty fast. I apply it in my robotic arm. I thought servo with plastic gears may not support in our simplistic construction, when arms attached directly attached to the axis. But it did work nicely. So good! (Posted on 5/16/2017)