This Rotating Toothbrush Heads Holders can hold up to 6 brushs. Additionaly It can also hold 6 normal toothbruch in the holes located on top of that. The parts do not need any support for printing if they are printed as they are saved in the stl file.As can be seen in the video the door of the holders can be opened only when the holder is roatated and plased infront of thr exit door.