Nylon Retainers,Black,Dome,24mm L,PK25, System of Measurement Metric, Shank Diameter 8.5 mm, Overall Length 25 mm, Shank Type Keyhole, Material Nylon, Head Type Dome, Head Height 1 mm, Head Diameter 17 mm, Color Black, Maximum Hole Diameter 8.5 mm, Product Type Push-In Rivet, Manufacturer Location Made in USA*, Body Length 24 mm, Material Grade/Class Ungraded, Package Quantity 25.