Bell spotlight, white. Cylindrical shape Ø7.0 / 13.6 cm. Aluminum with LED light source. (Item no.: 5951-00) PAR16, 5 W, GU10 socket, 360 lumens, 3000K. New bulbs can be purchased separately. Single-phase rails serve as both spot holders and power conductors. The rails carry power in a single phase, which means all spots on the same rail are either switched on or off together.