• 
  The brightest bulbs you can legally use on the road. X-Treme Power
• Product Presentation
  
  

• 80% brighter than a standard halogen lamp%
• 100% Interchangeable with a standard halogen lamp.
• The ultimate "HID" upgrade with halogen technology
• H7,H4 Quartz Glass construction for ultimate performance.
• German made OE quality
• UV Blocked to protect plastic headlamp components.

       Quartz Glass after contact with water

    Hard Glass after contact with water

Which do you think is safer?