Product details: Functional Attention: it works only with high brightness and low brightness after you install used for Brake Lights ; Convert your old incandescent lights to more modern LEDs; LEDs are brighter and light faster, draw less current and generate less heat than incandescents. 100% brand new and high quality. Each equipped with 10pcs super bright piranha LED on each light, provide maximum visibility and safety. High quality material with ultrasonic welding process, ensure waterproof + shock proof + dust proof seal. Light Source:10pcs F3 Piranha LED High Brightness Material: PC Lens + ABS Housing Light Color : Red Light Dimension : 7.5" x 3.3"x 1.1" Fixing holes space : 7" x 2.7 Wire Length: Approx. 11" Voltage : 12V DC Wiring: Black=Negative, Red=Positive Tail Light, White=Positive Brake Light Application: Trucks, trailers, tractors, semi-trailer, boat trailer, horse trailer, travel trailer, dump Truck, special vehicle, etc. Package Includes: 2 pcs 10 LED Tail Light. (Screw not included)