It's durable and long-lasting, high-quality PC resists water intrusion, and you never have to worry about it during . Fine workmanship and perfect style. This LED Light for your trailer, marine, boat, caravan, RV applications; Screws are included for easy mounting Black is negative,red is positive.They can be mounted anywhere you want,fix with screws. It's very easy to install, can be mounted anywhere you want, great for interior compartment light, cockpit light, etc. Colour:White Material:PC Package Contents: 4 x boat lights 8 x screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.