Upgrade your headlight bulb to emit a whiter, brighter light that is SAE certified and DOT approved, making them street legal in all 50 states and Canada. Available in models: 9004, 9005, 9006, and 9007. The Xtreme White Plus bulbs have a blue top coat that adds a slight blue tint to the lamp while still providing outstanding performance. The Star White bulbs are significantly whiter and brighter as they operate at 3800K, while the normal halogen bulbs operate at 3200K. The Star White bulbs feature Piaa exclusive Xtra Technology, which increases bulb performance. These bulbs can be used to upgrade performance in headlamps, fog lights, driving lamps and many other applications, throughout the vehicle. Bulbs are sold in either a Single Pack (one bulb) or Twin Pack (two bulbs).