OneMonroe's drain plug lights utilize LED technology and are perfect for attracting fish, night diving, or just night time water illumination. You can also use thrdrain plug out of the water for short periods of time. This can be very helpful when loading your boat on a dark ramp. With superior design and craftsmanship, Race Sport uses the smallest and strongest stainless steel waterproof housing in the world and is known for its unique design, simple installation, and ease of use.