These LED Fold Down 360° All Around Pontoon Lights are approved for USCG 2 NM (Colreg 2 mile). Mounts on 1-1/4″ square tubing. Constructed of injection molded nylon and aluminum. Installs with three #10 FH fasteners (not included). 12 VDC. 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.