Combination Masthead & All-Round White Light - Horizontal Mount - 2in. x 1 1/2in. Base

USCG Certified for use on sail or power driven vessels under 20 meters (65.6 ft.) in length 3 mile visibility Black plastic and chrome plated zinc alloy top, black plastic base and 3/4in. diameter anodized aluminum tube Plastic adapters for flat or V type mount, contains notch for through-base wiring Fold-down adjustable angle Clear lenses 12V bulbs included Screw size is 8