Sea-Dog Two Socket Mounting Plate Only - 10 Pack One Size. Constructed of injection-molded nylon.Specifications:Distance Between Holes (Length): 3-1/2 in.Distance Between Holes (Width): 1 in.Diameter: 1-1/8 in.Weight: 0.05 lb.Package Size: Includes 10 dual power socket/meter panels Package Contents: Sea-Dog Two Socket Mounting Plate Only - 10 Pack Sea-Dog 426501: Two Socket Mounting Plate Only - 10 Pack One Size