SoCal-LED 2pcs Ultra-thin Invisible Waterproof Blue LED DRL High Bright Daytime Running Light 24leds SMD 5630 Universal fits Car Truck Ultra thin Invisible design, only 8mm thick High Power LED Chip Daytime Running Light , full aluminum housing for good heat dissipation Elaborate design, good structures, waterproof, shockproof, easy installation Universally used on 12v/24v power source High/Low voltage protection Constant current circuit design (make sure of long life time)