Check the listing for details. Underwater Marine BOAT LED Drain Plug Light - 6LED White. Condition: New. Listed at 24.50 USD. 6 LED DRAIN PLUG LIGHT 1/2" NPT - WHITE Drain plug lights are a perfect solution to underwater lighting without compromising the light effect. 6 LED Drain Plug Light is "THE BRIGHTEST" underwater drain plug light and is a perfect light for dock parties, fishing, diving, swimming, dusk surfing, and night time cruising. We sell BEST QUALITY drain plug lights that uses high quality 316SS, has exquisite appearance and are age resistand, shockproof, and waterproof.Features: NO DRILLING REQUIRED Easy installation; simply connect to 12V power source and ready to go.IP Rating: IP68 waterproofEasy to move from boat to boat.1/2" NPT Drain plug light. (can be used with 3/4" or 1" NPT drain plug light but you would need to buy bushing from a hardware store)