Nylon Retainers System of Measurement Metric Shank Diameter 8 mm Overall Length 21 mm Shank Type Keyhole Material Nylon Head Type Dome Head Height 1 mm Head Diameter 15 mm Color Black Maximum Hole Diameter 8 mm Product Type Push-In Rivet Manufacturer Location Globally Sourced Body Length 20 mm Material Grade/Class Ungraded Package Quantity 25