Because I have searched a lot I want to help others here. Thus, the fixing is solid, looks good and is highly recommended for the price Completely restructured. The matches for the Acer projector. However, I simply left the small arms range and screwed him directly. Orientation is given 100%. One needs only screws M3 / 20 and M3 washers. These then combine with the washers that are with us and then everything fits.