Rugged, 316 stainless steel cover. For use on boats up to 65.6' in length. Provides 2 mile visibility. Stainless steel electrical contacts will not corrode. Includes 10 watt bayonet lamp. 7" tinned copper wire leads. Combination lights are visible 225°, port and starboard are 112.5°. Locking screw for easy assembly and maintenance.Size: 3-3/8" L x 2-7/16" W x 1-1/2" H.