Long Lasting BrightnessPlastic material reflector, smooth exterior makes the reflector self-cleaning. Interior LED chips are completely sealed against the lens for long lasting brightness. VersatileSmall size is convenient for transportation and storage so it can be used on different vehicles, such as trailer , bike, bicycle, trucks, cars and boat. Can also be mounted on a wide variety of objects to make them highly visible to drivers, such as mailboxes and bridge abutments. Excellent visibilityThanks to the unique cover design from the lens, excellent visibility in bad weather (rain, fog, sleet or snow), gives motorists an extra margin of safety even in bad weather. Safety red reflectorsRemind others drivers to keep their distance. Even at night or in a dark environment, these high visibility reflective stickers stand out on the road, can be visible and effectively point out rear vehicles to your vehicle, which ensures driving safety. Easy to InstallCome with strong thread to fix the reflectors, you just need to tighten the screws to install. Long Lasting BrightnessPlastic material reflector, smooth exterior makes the reflector self-cleaning. Interior LED chips are completely sealed against the lens for long lasting brightness. VersatileThe small size is convenient for transportation and storage so that it can be used on different vehicles, such as trailer, bike, bicycle, trucks, cars and boat. Can also be mounted on a wide variety of objects to make them highly visible to drivers, such as mailboxes and bridge abutments. Excellent VisibilityThanks to the unique lens cover design, excellent visibility in bad weather (rain, fog, sleet or snow), gives motorists an extra margin of safety even in bad weather. Safety Red ReflectorsRemind other drivers to keep their distance. Even at night or in a dark environment, these high visibility reflective stickers stand out on the road, can be seen and effectively point out rear vehicles to your vehicle, which ensures driving safety. Easy to InstallCome with strong thread to fix the reflectors, you just need to tighten the screws to install. Package Quantity: 2 pieces Product color: yellow Product size: diameter 6cm Note: Manual measurement, please allow 1 - 3cm error