Brite Lites are the industry leader in xenon-gas-filled headlights, which produce a super-white HID-type headlight beam High-quality replacement headlight bulbs; various exotic gases and coatings have been used to produce superior, super-trick lighting over standard, dull headlight bulbs All twin-pack bulbs are in a reusable Tuff Pak storage case with full-color graphics. BULB 100/55 H-13 BLUE