Fold Down Combination Masthead/White All-Round Light - Horizontal Mount Certified For Use on Sail or Power Driven Vessels Under 20M (65.6') in LengthFeatures:Horizontal MountReduced Glare DesignBlack Polymer Top with Clear Polymer LensBlack Polymer BasePolymer Adapters for Flat or "V" Type Mount, Contains Notch for Through-Base WiringFold-Down Adjustable AngleSpecifications:Bulb: 12 Volt (Included)Pole: 3/4" Dia. AnodizedBase Dimensions : 2" x 1-1/2"Screw Size: #8