Designed to handle extreme off road environments KC 7 in H4 Headlights featured a sealed rubber boot design for H4 bulbs with UV and impact resistant hard coated Lexan lenses. KC's 7 in H4 Headlights are significantly brighter than factory Jeep headlights delivering maximum D.O.T. approved candlepower using CAD designed multi-surface reflector optics and powerful 55-60W H4 Halogen bulbs.COMPATIBLE WITH CYCLONE ROCK LIGHT KITS KC's headlights feature a relay system which allows the operation of high beams while simultaneously providing active low beam Day Running Lamps for safety while meeting D.O.T. approved compliance.