If you're needing to replace or upgrade your truck or trailer lights, these PARTSam LED markers are seriously good value. You get four lights in the pack - two with amber lenses and two with red, all featuring that cool smoked black look that works with pretty much any vehicle color. Each light is 2 inches in diameter and packs 9 bright LEDs that are way better than old incandescent bulbs - they're visible but not blinding to other drivers. The IP67 waterproof rating means these can handle being submerged, which is perfect for boat trailers that see water regularly. Installation is straightforward with the included grommets and pigtails - they're designed for flush mounting and accept standard 2-prong plugs. The miro-reflex faceted reflector design gives you increased light output with a modern appearance. One thing to note - these are DOT approved for either side marker OR clearance use, but not both functions simultaneously due to the beam pattern. So if you need both, you'll want to install separate lights. The sonic sealing means water won't get inside and damage the diodes or circuit board. I've installed these on several work trailers and they've held up great through rain, mud, and rough roads. The build quality feels solid, especially for the price point, and the smoked lenses look really sharp against darker vehicle colors. Whether you're fixing up an old trailer, building a new one, or just want more reliable lighting on your truck, these PARTSam lights deliver professional results without the crazy price tag. They're bright, durable, and easy to install - pretty much everything you want in trailer lighting.