If you have purchased a servo from us, you probably have a lot of plastic accessories that you can snap onto the rotating part of the servo. They are called "servo horns". For many robotics projects, you will eventually drill or glue the horns to attach them to your frames. But maybe you missed, or you want to recycle the expensive part of the engine? This product comes with only the horns!  No servo is included, so you can reuse the motors you have.

They are coupled with 25 tooth servomotors. We have found that they are compatible with our standard size actuators:

    Continuous rotation servo - Feetech FS5103R
    Standard servo - TowerPro SG-5010
    Standard size - High torque - Metal gear servo

But it will not fit either the Parallax Feedback 360° high-speed continuous rotation servo or the micro and sub-micro servos.