【A MUST FOR 80" OR WIDER TRAILERS】Trailers measuring 80" or wider require identification lights for additional visibility; Mount this clearance light bar on the top of your truck/trailer or between the taillights. 【Be universal for 12V Vehicles】Semi Truck,Trucks, trailers,Utility Truck, travel trailer,Utility Trailer,boat trailer, horse trailer, camper trailer, cargo trailer, RV camper, motorhome, pickup,UTE etc. Light Color: Red Diodes: 9 Mount: Surface Connection: Hard wired Material: Stainless Steel Lens Material: Polycarbonate Voltage：12V Size/Shape: Light Bar .