The black 12 volt plastic puck light is prefect for lighting up counter tops, bars, display cases or where ever a unique light is needed. The puck light comes with a 20 watt 12 volt xenon bulb, four foot 18G lead wire with connector for power hook up and frosted lens (which reduces glare). The punk light can be surface or recessed mounted and you can link up to ten lights together. The puck light is dimmable with most standard incandescent dimmers and the dimensions are 2-5/8 inches wide by 1-3/8 of an inches high. The puck light requires 12 volt power supply and it is sold separately.