Nylon Retainers System of Measurement Metric Shank Diameter 6.5 mm Overall Length 18.5 mm Shank Type Keyhole Material Nylon Head Type Dome Head Height 1 mm Head Diameter 17 mm Color Black Maximum Hole Diameter 6.5 mm Maximum Material Thickness 4.5 mm Product Type Push-In Rivet Minimum Material Thickness 2 mm Manufacturer Location Made in USA Body Length 17.5 mm Material Grade/Class Ungraded Package Quantity 25