9/32" (7.25mm) Hole Size Head Diameter: 20mm Stem Length: 21mm Black Nylon Shield Retainers Compare with: Auveco #21026, Car Pak # 99-8973, 998973, Chrysler # 4860379AA, Disco # 10611PK, 10611B, Crest-Midwest CRX20194, Kent / Lawson # P85091, Winzer # 502.8973