The PIAA H7 Style Xtreme White Plus Bulb provides intense white light at a 4000K rating to illuminate road hazards and street signs long before normal halogen bulbs, with a slight blue topcoat tint for enhanced curb appeal. Manufactured to SAE recommended specifications and DOT compliant, this 55=110 watt halogen bulb provides 110 watts of light for just 55 watts of power and is made with a high-quality, heat-resistant tube. It is sold in a twin pack.