This highly used base is constructed of die-cast ZAMAK chrome finish. Swivel cover protects the socket when light is stowed away. Socket is keyed to prevent incorrect insertion of pole light. Provides a 2-pin socket and a 12Â° angle and installs on narrow gunwales or deck areas. Completely non-corrosive, features contacts which are nickel-plated to resist corrosion and multi-crimped for durability, and wire leads tinned for corrosion resistance.Three countersunk holes for installation fasteners. Includes 7-1/2`` hard wire leads for connection to 12 VDC power supply. Dimensions: 4`` long x 1-5/8`` wide. 1-3/8`` diameter installation hole size.