1/4” (6.5mm) Hole Size Top Head Size: 6.3mm x 11.5mm Stem Length: 21mm Natural Nylon Door Trim Panel Retainers Compare with: Auveco #15670, G.M. # 15545202, Car Pak # 87-6344, 876344, Barnes / Kar # 1197, Crest / Midwest # CRX129, Disco # 1646PK, 1646B, Kent / Lawson # KT11608, Winzer # 502.1018, Wurth # 150153107, Kimball / Midwest # 12715