Utilizes your 1/2" NPT drain plug (physically measures 3/4") in the middle so you can still drain the boat! 2400 lumens of light! The Y adapter is brass, the LEDs are stainless This light will illuminate your wake and still have the ability to drain your boat. Simply use your drain plug and install it in the center. The light is made of solid brass, the lights are stainless steel. It includes with waterproof LED drivers for each light. Lifetime warranty. If you use this light in saltwater, apply TEFGEL to all fittings (available in our online store) 4.5" overall width and protrudes 2.5" Input 12 volt up to 24 volt DC