LED Side Mount Lights are approved for USCG 1 NM (Colreg 1 mile).Constructed of corrosion resistant stamped 304 stainless steel or injection molded ABS. One pair includes port and starboard lights. Surface mounts vertically with two #8 FH fasteners (not included). 12VDC. Low amp draw. All USCG approved navigation lights must be mounted properly to provide the correct visual alignment and allow unimpeded sight lines. Please refer to USCG regulations for 1 NM and 2 NM navigation lights for more information.