Progress Lighting P6120-174B 12 Volt MR11 Flex Track Head with 1-3/4-Inch Single Color Glass, Blue Urban Bronze finish Blue glass Uses (1) 35-watt MR-11 bulb (included) 3-Inch Width x 3-Inch Height Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting