Progress Lighting P6119-09 12-Volt MR11 Flex Track Head with 2-Inch Mesh Shade, Brushed Nickel Brushed Nickel Finish Size: 3-1/8-Inch Wide by 6-Inch Height Uses (1) 35-watt MR-11 bulb (included) Uses 35 Watts Must be used with Illuma-flex track system.