This is a 2-prong nylon stern light pole base in black that is suitable for most of the navigation lights. This light pole base comes with a snap-in cover to keep it clean and dry when not in use. It fits most 3/4 round 2-prong stern light poles. It also works with 3/4 flag poles that are telescopic. This item comes with wire as well for wiring purposes. This stern light base is perfect for use for most boat, pontoon, kayak, canoe, and any more vehicles. The dimension of the base are approximately 2-1/2" (L) X 1-3/4" (W) X 3-1/8" (H), depending on the style you choose. The color and dimension shown in the listing are only for reference and may vary among devices used for viewing. Item number: P01002-902P (Tear Drop - 90 Degrees), P01002-122P (Tear Drop - 15 Degrees), P01003-902P (Round - 90 Degrees), P01003-122P (Round - 15 Degrees), P01004 - 902P (Rectangle - 90 Degrees), P01004-122P (Rectangle - 15 Degrees), P01005-122P (Oval - 15 Degrees).