LED Side Mount Navigation Lights are approved for USCG 2 NM (Colreg 2 mile). One pair includes port and starboard lights. 400072 is constructed of injection molded ABS. Installs with two #8 FH fasteners (not included). 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. WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Housing: Black Lens Color: Red/Green Visible Range (Miles): 2nm Voltage - Input Range (Volts): 12v LED: Yes Box Dimensions: 2"H x 5"W x 9"L WT: 0.4 lbs