Liteline AO1012/2-2-BNBK-120V Apollo 2-Head Track Pack, 2-Feet, 120V, Brushed Nickel/Black For use with 120V MR16 GU10 bulbs (50W max) The bulb housing is controlled with an adjustable yoke that provides custom aiming of 320 degrees horizontal and 160 degrees vertical rotation Dimmable when used with electronic low voltage rated dimming controls only