IDEAL, Grommet, Buchanan, Color: Black, Size: 9/16 IN Outer Diameter, 1/4 IN Inner Diameter, 0.280 IN Thickness, Material: PVC, Material Type: Flexible, Durometer: 60, Dimension B: 0.370 IN, Dimension E: 3/32 IN, Hole Diameter: 1/4 IN