Housweety 100 Sets Silver Tone Cone Spike Rivet Studs Spots 10mm(3/8") 8mm(3/8") Dia Material:Alloy(Cadmium Free) Size: Approx:10mmDia. 8mm Dia( 3/8")( 3/8") Hole size: Color:dull silver tone(not silver plated) Quantity:100Sets