Article described as the dealer, have been looking for my wooden ceiling recessed spotlights in LED design that fit in a normal Dosenauschnitt 68mm, these do it. Execution is really very stable metal version no cheap plastic. The only compromises you have to make at the Lamp 1 Watt per bulb as a guide in the corridor still OK. If the ceiling is slightly higher one can the bulbs to 3-5 Watt LED, s exchange. Otherwise very good product at this price, there are also 2 per lamp base as well 1x GU10 or ceramic socket for halogen.