Attwood Corporation Plug-In Base For Locking Collar Pole 2-Pin 2-Pin light pole Color - black 2-3/8 inches diameter Stainless steel cover ATTWOOD PLUG-IN BASE FOR LOCKING COLLAR POLES This plug-in pole light base offers clean, fresh styling with a rugged stamped stainless steel cover Perfect for saltwater applications and high-end boats, For use with all straight pole lights with a locking collar Light Base The round footprint is only 2.38 Inch diameter, Black: 2-Pin When closed, profile is only 3/8 inch High Molded inner cap seals water out of the socket when cover is closed Inner socket contains a large drain hole to prevent clogging and contact failure