These green reflectors are such an easy and affordable way to make your vehicle safer, especially for night driving. The package includes 8 round reflectors with M6x1.0 thread size, each measuring 56mm (about 2.2 inches) in diameter. Made from durable ABS plastic that won't fade in hot summer sun or crack in cold winter temperatures. The reflective material really catches headlights and increases your visibility to other drivers, which can help prevent accidents when you're parked or driving in low light conditions. Installation is super simple - just twist them tightly into place using the included nuts, and they stay secure without vibrating loose. They're universal fit, so they work on cars, trailers, motorcycles, trucks, boats, and even bicycles. The green color stands out without being too flashy, and the plastic construction means they won't rust or corrode over time. Much cheaper than buying reflectors from auto parts stores, and having 8 in the pack means you can outfit multiple vehicles or have spares. Really important safety equipment for anyone who drives at night or parks on dark roads. The quality feels solid, and they install in minutes without any special tools required. Definitely one of those simple upgrades that could prevent a serious accident.