Great for cruising, swimming, and fishing. Professional Grade Ultrabright 1800 lumen LED underwater light creates a fun mood and offers additional visibility and safety at night. No Drilling Holes! Easy to install in minutes. Simply replace your boat's standard threaded 1/2" drain plug with this ulta-bright underwater LED light. Waterproof Quick-Connect plug makes it easy to remove light when trailering your boat. Beautiful Stainless Steel Construction for use in Fresh and Saltwater. Available in many colors: Blue, White/Clear, Red, Green,pink,purple,orange,yellow.