Perko 12V Bi-Color Bow Light Black Case Chrome Plated TopTechnical Information, Black plastic case, Chrome plated zinc alloy top, Certified for use on power driven vessels under 12 meters (39, 4 ft, ) in length, 12 volt, Length: 4"", Width: 3-1/8"", Screw Size: #8, Material: Chrome zinc, Vertical Height Inches: 1, Model Number: 1310DP0CHR, Ship Weight: 2, 5/20, 7, Product : PERKO 12V BI-COLOR BOW LIGHT BLACK BASE CHROME PLATED TOP, Manufacturer : PERKO, Manufacturer Part No : 1310DP0CHR, UPC : 085226395031 SKU: CW39211