Constructed with quartz glass with blue coating, DOT-compliant 12 V HELLA High Performance (HP) 2.0 Bulbs have halogen gas formulation that delivers optimized HID appearance and performance. Filament maximizes light output, and platinum tip on select bulbs enables precise light focus. While helping reduce nighttime driver fatigue, crisp white illumination produced by these bulbs also helps drivers see more contrast in objects ahead for down-road and side-road visibility.