Flexible Strain Relief Bushings, Panel Mount: Type - Strain Relief Bushing; Cable Type - Round, SJ, SJT, SJO; Cable Count - Single; Cable Size - 18/2, 18/3, 16/2, 16/3; OD Min - 0.300; OD Max - 0.355; Connection - Straight-Thru; Mounting Hole Diameter - 0.625 to 0.687 in; Material Thickness - 0.156 in; Material - Nylon; Color - Black