17/64" (6.80mm) Hole Size Stem Length: 11mm Flange Diameter: 20mm Black Nylon Phillips Screw Type Retainers Compare With: Subaru # 90913-0051, 909130051, Auveco # 21594, Disco # 12078PK, 12078B, Lawson # 1372023, Crest Midwest # CRX29842, Car-Pak # 99-9195, Kimball / Midwest # 131083