5/16" (8mm) Hole Size Flange Diameter: 19/32" Stem Length: 13/16" Black Nylon Screw Type Retainers Compare with: Auveco #14997, G.M. # 10053182, Car Pak # 87-6301, 876301, W&E #2977, Barnes / Kar # 1395, Clip Lizard # 10240, Crest / Midwest # CRX5168, Disco # 1446PK, 1446B, Kent / Lawson # P85330, Winzer # 502.3238, Wurth # 150155185, S&R # 415780, Kimball / Midwest # 10771