Extruded Grommeting, Black Nylon 6.6 for Temperatures up to 85 Degrees Celsius (185 F), Height of 5.58mm (0.220 Inch), Width of 5.33mm (0.21 Inch), Thickness 1.14mm (0.045 Inch), Width Maximum Panel Thickness of 2.54mm (0.1 Inch)