High beam keeps low beam illuminated and adds two additional advanced optical D lenses with three projector senses for an incredibly wide optical pattern. Made from heavy-duty, lightweight die-cast aluminum, the low-profile housing requires no trim ring and offers a plug-and-play installation. Low beam consists of three high-power advanced optical D lenses and a DRL. Durable polycarbonate lens for long-term durability. Headlamps are SAE, DOT and ECE compliant.