6-1.00mm Screw Size 12.7mm Hole Size 14.5mm Stem Length .015 - .111" Grip Range 5/8” Flange Diameter Black Rubber Well Nuts Compare with: Auveco #13002, G.M. # 20130258, # 15505451, Car Pak # 78-4958, 784958, W&E #2524, Barnes / Kar # 1937, Crest / Midwest # CRX658, Disco # 1284PK, 1284B, Kent / Lawson # P85012, Winzer # 502.13003, Wurth # 150159284