WAC Lighting HTK-103LED-WT H Series Line Voltage Track Head with LED Gu10 Bulb Construction: formed metal with polycarbonate track adaptor and aiming screws in black or White to match track finish For use with 120V track. Track Fixture is available in H, j/j2, and L track configurations. Order according to track layout specifications GU10 lamp included with Fixture. Tk-103led includes an 8W LED GU10 and tk-103 includes a 50W halogen GU10 Smooth and continuous dimming to 10% with a triac dimmer (halogen only) or electronic low Voltage dimmer (LED or halogen) 350Deg horizontal rotation and 90Deg vertical aiming. Easily re-lamped from the front without the use of tools. Standards: UL & CUL listed for dry locations Pre-installed GU10 LED included Fixtures do not need a transformer 350Degree horizontal rotation and 90Degree vertical tilt Dimming: 100% - 1% White Finish