Amarine Super Bright 1000 Lumens , Blue LED Boat Drain Plug Underwater Light, 20w, 1000 Lumens , Garber-fishing, Swimming, Diving, 1/2" NPT, Blue , 1000 Lumens Made of 1 powerful LEDS 1000 Lumens , 20W : Supper Bright Beam angle:120 degree Wide Range Voltage: DC 12V-24V Fits almost all " brass (Garboard type or similar) drains NO DRILLING REQUIRED Easy installation; Simply connect to 12V - 24v power and ready to go. Shockproof, waterproof, and energy saving. IP Rating: IP68 waterproof Easy to move from boat to boat. 1/2" NPT Drain plug LIGHT (can be used with 3/4" or 1" NPT drain plug but you would need to buy bushing from a hardware store) Housed by Marine grade aluminium It has heat dissipation efficiency, exquisite appearance and are age resistant, shockproof, and waterproof. The unit is vibration proof. It is not affected by engine vibration, so you can operate the light when cruising (and this is encouraged for a great "Wow Presentation!"