Attwood's 2-Mile Stainless Steel Bi-Color Sidelights are made with a rugged stainless-steel cover for outstanding resistance to impact and corrosion. For use on boats up to 65.6 ft. (20 meters). Horizontal deck mountSmooth contour prevent lines from snagging on housingStainless steel electrical contacts will not corrodeCompact size allows installation on confined decksTinned-copper wire leads for easy installation and corrosion-resistance Two-mile, 225 light visibility