This Attwood LightArmor™ 910R Series Round Plug-In Light Base is a dependable, easy to use base for an all-around pole light (sold separately). This 3-pin Light Base has a unique threaded design that provides a perfect fit with the threaded locking collar featured on Attwood Pole Lights. The innovative design ensures the pole inserts with a tight and secure fit, and it prevents rattling while the boat is underway or during trailering. This Light Base has a low profile to help prevent water from pooling on the top of the black overmold 306 stainless steel cover. It can be used with Attwood bi-color pole lights (sold separately). Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.