Introducing a full range of high output and high efficiency HPI Metal Halide Light Bulbs, each featuring a super bright Daylight colour temperature. These tubular or elliptical shaped quartz discharge lamps offer a hard glass outer envelope, fitted with a standard GES/E40 screw base. These lamps are available in either coated or clear versions and offer a natural white colour appearance, high luminous efficacy and excellent colour stability through the long 10,000 hour lamp life.