Attwood's LightArmor light base is designed for premium performance, style, and durability. This plug-in base style features a threaded design that fits perfectly with the threaded locking collar offered across the entire line of Attwood Pole Lights. This unique system ensures a tight and secure fit that prevents annoying rattling sounds while underway or trailering. Low profile prevents water from pooling on the top surface. Three-pin base with stainless steel construction.