1/4" (6.4mm) Hole Size Head Diameter: 1 5/16" Stem Length: 13/16" Black Nylon Fender Shield & Hood Insulation Retainers Compare with: Auveco #17004, Chry. # 4341060, Car Pak # 86-6015, 866015, W&E # 2957, Barnes / Kar # 3306, Crest / Midwest # CRX592, Disco # 1865PK, 1865B, Kent / Lawson # P38749, Winzer # 502.5110, Wurth # 150157015, S&R # 415232, Kimball / Midwest # 12915