ATTWOODLIGHTARMOR 3-PIN PLUG-IN BASES•Overmold 306 Stainless Steel Black Cover Round•Threaded locking system for secure fit •Unique cover design •Stays secure while underway or trailered •Low-profile prevents water from pooling on top surface •Includes threaded locking collar to retro fit existing pole lights •NOTE: 3-Pin Light Bases** fit Bi-Color: NV6LC2 and 5095 Series