The S7 EL technology of style, clarity and multi-colored: consisting of super white, blue, red, and orange are introduced through the S7 Race Gauges. The S7 Race Gauges compliment the S7 Series of products with its useful measurements such as oil and water temperature, oil pressure, volt, boost, and air fuel ratio. Each gauge is precision crafted for accuracy as well as designed for maximum visual appeal. / 52mm