Housweety 100 Sets Silver Tone Star Spike Rivet Studs Spots 11mmx11mm(3/8"x3/8") 7mm(2/8") Material:Zinc Metal Alloy+Alloy(Cadmium Free) Size: Approx:11mmx11mm 7mm( 3/8"x 3/8")( 2/8") Hole size: Color:dull silver tone(not silver plated) Quantity:100Sets