The Arches Directional Down Light works with MR16 lamps or MR16 Chameleon lamps. It features an adjustable glare shield and the Brilliance Metal Works signature adjustment system, which allows for 22 points of articulation of the knuckle in 10 degree increments. For an alternative mounting option, pair the Arches with the Tree Mount optional accessory. When using in a tree, consult with an arborist for the best way to mount for the particular tree species.