Black Nylon Male/Female Ratchet Snap-Together Rivet - Compatible Hole Diameter Range 8.8 - 7.1 mm (0.346 - 0.281 in) Compatible Panel Thickness Range 8.8 - 12.7 mm (0.346 - 0.500 in) Head Diameter 19.1 mm (0.750 in) Head Height 2.4 mm (0.093 in)