FEATURES Ultra-slim Line LED Strip Signal Lamp,High Brightness 15 Diodes LED Combination with Better Heat Distribution,Material: High Impact ABS Housing & Sealed Polycarbonate Lens,Dust-proof IP67 Waterproof. APPLICATIONS for Use on Heavy Duty Trucks ( Peterbilt Freightliner Kenworth Mack Western Star), Semi Trailers, Cargo Trailers, Boat Trailers, work Vehicles and a Wide or Narrow Overland Vehicle Requiring Quality DOT Rated Lighting. FUNCTIONS Functions As Marker, Clearance Light, Side Marker, Identification Light, Turn Tail Light . EASY TO INSTALL Package Included: 2x LED Tail Light,4x Screws,4x Screws Caps. WARRANTY Enjoy 5 Years Quality Warranty , Our Strict Quality Control System, We Test Each Item and 100% Ensure In Good Condition Before We Ship. Offering Customer Technical Service, Feel Free Contact Us for Technical, Installation and Use Question.