For our house I was looking for mounting frame for the spots. Since we needed 50 pieces and our budget is limited when building a house, the price was a decisive criterion. To my surprise, the quality was outstanding for the price (1.59). Clean processing, nice brushed metal not plastic. I wanted to deliberately do not swivel spots, because I really like the tricks look. The lamps are run with after the frame is fitted from below into the frame and fixed with the clamping ring.