-Rubber covered, nickel-plated contacts -Non-corrosive -Ideal for installation in tight quarters Bases for bow and stern light poles from Attwood are designed with nickel plated contacts and are rubber covered to resist corrosion when lights are stowed away. The tough, resilient 2-pin base for pole lights is ideal for installation in close quarters and provides 2-pin socket for angled poles when installed on narrow gunwales or deck areas. Three-pin base for pole lights with locking collars is well-suited for rough conditions or long poles. Completely non-corrosive.