Cover Cap - Cap Inside Diameter - 10.8 mm | 0.425 in ; Overall Diameter - 10.8 mm | 0.425 in ; Overall Height - 10.5 mm | 0.413 in ; Natural ; Nylon 6/6

This washer is be used with the corresponding cover cap (ordered separately). The pair clip together around the screw head in application and provide an aesthetically pleasing protective solution. Made from natural Nylon.