Leviton 3059-1E Portable Outlet Box, Sing-Gang, Standard Depth, Pendant Style, Cable Diameter 0.230-Inch 0.546-Inch, Black Molded Santoprene TPV Housing is Extremely Durable, Even in Harsh Conditions Non-Metallic Construction Provides Protection Against Electrical Shock Available in Pendant and Feed-Thru Styles Variable Adjust Strain Relief Provides Superior Protection Throughout Entire Range of Cable Diameters Strain Relief Accepts Cable Diameters from 0.230- inch - 1.000-Inch