1/4" (6.4mm) Hole Size Head Diameter: 7/8" Stem Length: 1 7/16" Black Nylon Splash Shield & Wheel Cover Retainers Compare with: Auveco #15543, G.M. # 22547243, Chry# 6501916, Car Pak # 99-8816, 998816, Crest / Midwest # CRX8882, Disco # 10366PK, 10366B, Kent / Lawson # P18336, Winzer # 502.5260, S&R # 416140