Compatible with Heavy Duty trucks like Peterbilt, freightliner, international ,Kenworth, mack,etc, they can be also be used to DIY on other vehicles as trailers, tractors, semi-trailer, dump truck, bus, boat, special vehicle, etc. Waterproof design with sealed lens and housing to prevent damage from moisture. Each LED is directly wired and water-tight sealed. These LEDs draw less current, generate less heat and are brighter and light faster than an incandescent bulb.These premium lights can handle harsh weather and road vibrations. Heavy Duty Amber Polycarbonate Lens, Chrome Plated Automotive Grade High-impact ABS housing with Screws.Chromed ABS plastic housing with foam mounting gasket.These Lights are impact resistant and less susceptible to shock damage. 12 Volt Input.Overall dimensions are approx. 15.25" L by 3.70" H by 3.46" Diameter. Hole Distance: distance between mounting holes is 10.43". Light is supplied with 2 wire leads for ground and hot wire. Package include: 5x 17 LED Clear/Amber Semi Truck Bus RV Roof Cab Marker Lights.