Black plastic, vertical mount pole base 911490-1 is for use with straight, two-pin poles on windshield mounts or could be transom mounted on utility boats. A hinged cover protects the socket when light is stowed away. Easy to mount with #8 fasteners (not included). For flat windshield frame and includes a “V” adapter for mounting on angled windshield frame. Or for use as a transom mount in open utility boats. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing 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.