1/4" (6.40mm) Hole Size Stem Length: 11/16" Flange Size: 11/16" Black Nylon Phillips Screw Type Retainers Compare With: G.M. # 10139822, 25680782, Ford # N808147S, Auveco # 14991, Disco # 9508PK, 9508B, Crest Midwest # CRX5164, Car-Pak # 86-6096, 866096, Wurth # 150159547, Kimball / Midwest # 12846