These bright xenon puck lights are ideal for undercabinet and task lighting as well as china cabinets or anywhere else you might need a little extra lighting. Each disc light uses a 20 watt 12 volt xenon lamp which provides clear white light. They are constructed with high quality all-metal castings that comes in six different designer finishes to blend into any environment (black, bronze, copper, nickel, polish brass, and white). You can connect anywhere from 1 disc to 18 discs (depending on the transformer that you use) to one transformer. Their dimensions are 1"(h) x 3"(dia.)