PartsSquare 2x H4 9003 HB2 White 80W SEOUL Projector Lens LED 1200 Lumen Headlamp Low Beam Bulb New generation of High Power LEDs, with Industry Leading Performance and Reliabiliby Made by high quality aluminum alloy housing can + virtually unbreakable PMMA Lens. Aluminum alloy shell acts as radiant heat sink, ensure the secure temperature range. Environmental-friendly: energy saving, no UV and IR radiation, shock-proof and anti-corrosion. Faster on/off response time and vibration resistant If the LED does not light up, simply flip it 180 degrees (reverse the polarity)