Alfa Lighting P52QJ-BRZ-AMO 12 Volts Dome Pendant with Quick Jack Adapter, Vintage Bronze with Amber Onyx Shade Natural onyx stone shade is 5-1/2-Inch high and 3-7/8-Inch wide Unique Quick Jack connector makes shortening the 72-Inch cord length easy, contains fewer parts, and offers great reliability Must be purchased with transformer T537QJ 12 Volts solid state electronic transformer (sold separately) for installation on Juno Trac Ceramic socket uses one 12 Volts, 50 Watts halogen bi-pin lamp that is dimmable using a dimmer specifically designed for use with electronic transformers UL listed for dry location installation