5/16" (8mm) Hole Size 10mm Stem Length 18mm Flange Diameter Black Nylon Bumper Push Type Retainers Compare With: Chrysler # 6509960AA, Auveco # 21680, Disco # 12915PK, 12915B, Car-Pak # 99-8944, Crest Midwest # CRX29650, Lawson # 1231557, Wurth # 150121680, S&R # 416206, Kimball / Midwest # 13864