1/4-20” Screw Size 1/2” Hole Size .015 - .111" Grip Range 9/16” Stem Length 5/8” Flange Diameter Black Rubber Well Nuts Compare with: Auveco #13004, G.M. # 528846, Chry # 6033705, Car Pak # 78-4963, 784963, W&E # 2285, Barnes / Kar # CP78-4963, Crest / Midwest # CRX6802, Clip Lizard # 30304, Disco # 1095PK, 1095B, Kent / Lawson # P52127, S&R # 303325