All-Round Pole Light - 22in.

USCG certified for use on power driven vessels under 20 meters (65.6 ft.) in length. 2-mile visibility. Chrome plated brass top and base (3 3/8in. X 2 1/4in.), clear fresnel globe, 3/4in. diameter anodized tube with locking collar, waterproof cap and retainer, 16deg. rake, and gold plated contacts. 12V bulb included. Screw size is 8.