Eye 4200° Kelvin premium metal halide lamps for indoor tennis courts and all other sports facility applications. EYE premium high output universal and position oriented metal halide lamps are the preferred lamp for indoor tennis courts and similar applications due to 80% maintained lumens, superior ±200° Kelvin lamp-to-lamp color uniformity throughout lamp life, low lamp failure rate, nickel plated brass base that won't seize in the socket and a ceramic insulator that prevents arcing.