Progress Lighting P6126-09 12 Volt MR16 Flex Track Head with Bare Lamp, Brushed Nickel Brushed Nickel Finish 3-1/2-Inch Width x 6-1/16-Inch Height Uses (1) 50-watt MR-16 bulb (included) 50-Watt max Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting