Sea-Dog 4in Gauge Power Socket Adapter Mounting Plate - White One Size. gauge with two new 1-1/8 in. style gauges. It is installed by placing the face plate in front of the dashboard and then inserting the socket/meter in the hole with the washer behind.Features:Designed with D-flats to prevent gauges from spinning the assembly is held in place by the socket/meter nut for a clean finished lookConstructed of UV-resistant injection-molded nylonSpecifications:Color: WhiteFace Plate Outer diameter: 3-3/4 in.Face Plate Inner Diameter: 1-3/16 in.Face Plate Thickness: 3/16 in.Height: 3-3/8 in.Washer Inner Diameter: 1-1/16 in.Washer Thickness: 1/8 in.Weight: 0.06 Package Contents: Sea-Dog 4in Gauge Power Socket Adapter Mounting Plate Sea-Dog 426104-1: 4in Gauge Power Socket Adapter Mounting Plate - White One Size