I needed a disco ball to complete a lighting set. I chose this one because it is a complete package and there was nothing to buy more. There is of course the mirror ball, a metal chain but also a mounting base with a small electric motor and 8 multicolored LED and screws to hang the whole ceiling. The ball itself is good, I think the finish is correct. It is 20 cm in diameter. Which is enough for a small dance floor. The mirrors are highly reflective, the effect is quite spectacular when the LEDs are on. The engine makes no noise and runs very regularly. It is of course possible to point an external projector on the ball to find a conventional ball effect facet. So I'm pretty happy with this purchase.