3/8” (9.5mm) Hole Size Flange Diameter: 1” Shoulder: 5/32” Stem Length: 15/16” Black Nylon Rear Bumper Fascia Push Type Retainers Compare with: Auveco #18310, G.M. # 22587036, Car Pak # 96-7578, 967578, W&E # 2729, Barnes / Kar # 1672, Crest / Midwest # CRX183, Disco # 10674PK, 10674B, Winzer # 502.3322, Wurth # 150154127, S&R # 416008, Kimball / Midwest # 10754