Grand Slam 960 Electric Masthead Anchor Light The Grand Slam 960 Electric Masthead Anchor Light offers enhanced safety, durability, and style. Building on the success of the GS-950, the Grand Slam-960 features a durable stainless-steel body and Type-316L stainless-steel breakaway pin for superior weather resistance. It incorporates a new stainless-steel anti-backlash linear screw drive for added durability. The oblong design accommodates a longer, more powerful motor for excellent performance at sea. Suitable for powered vessels up to 39 (12 meters), the GS-960 meets the USCG's 3 nautical mile visibility requirement. Boaters can easily adjust their Masthead Anchor Light from the deck with a push-button operation, thanks to the auto-rotating stop feature and manual stop option. This is a fully electric unit with a hidden base wire inside the hardtop, which easily installs to the top s surface. It has the same hole pattern as the GS-950, making upgrades possible, and fits all top thicknesses. The GS-960 lights run on 12 volts and consists of four 3-watt LED Cree chips driven by two Mean Well drivers. Sold individually.