What more, the office, the 20W MR16 LED lamps against should be replaced. If Amazon has quickly find and ordered 6 pieces. Delivery of course, as usual super fast .. The old lamps expanded (each lamp is equipped with 2 Allen screws in the base locked) the new clean, finished look even good and now needs statt100W now 16W. The light is super bright for an office. I have not bought a special transformer, since the series transformer is round and a LED transformer on the length does not fit, to date, about 4 weeks, there is no problem.