Wac Lighting HHT-801-BK Track Head, Premier Series, Low Voltage, Contemporary/Modern Style, 50 WTT, 120 V, Lamp: 50 WTT MR16 Dimmable (Not Included), 1 Lamp, 1 Head, 2-1/2 IN Length X 3 IN Width X 2-1/2 IN Height Head, 120 V Integral Electronic Transformer Ballast, Clear Lens Reflector, Metal Fixture Material, Black, Clear, Bi-pin Ceramic Socket, Rail Mounting, 6 IN Height, UL Listed, CUL Listed, For Residential, Retail, Commercial and Hospitality Environments