5/16" (8mm) Hole Size Head Size: 15/32" x 1 5/16" Stem Length: 9/16" Black Nylon Rocker Panel Moulding Compare with: Auveco #19800, Car Pak # 99-8559, 998559, G.M. # 10437565, W&E # 3129, Barnes / Kar # B10571, Crest / Midwest # CRX15714, CRX1514, Disco # 9969PK, 9969B, Kent / Lawson # P24214, Winzer # 502.1973, Wurth # 150156113, S&R # 421377