The black handle does not rotate, this is a model of a collective to enhance the realism of the flight sim experience.
This product is in no way affiliated with Logitech or Saitek, and the Logitech/Saitek Throttle Quadrant is not included with this product, only the plastic collective lever.
Because this item is 3D printed there can be slight imperfections in the final product, these imperfections will not effect the usability of the product.
If your throttle quadrant is older or has been used rough and has become looser, there is a possibility that it wont be able to hold the weight of the handle and will slowly slide back down.