PERKO LED MASTHEAD LIGHT- 12 VOLT - 0170BM012L. Black plastic. Height overall - 3 5/8 inches. Projected overall inches - 2 1/2 inches. Width - 4 1/8 inches. European Style Navigation Light. LED. Certified for use on sail or power driven vessels under 20 meters (65.6 feet) in length. 225 degree visibility arc. 12 volt. LED features: Uses less than 1/2 the energy draw of standard lights. Low heat. Long life. For Lens and shield assembly, replace the last three digits of the catalog number with the letters "LNS".