10 Sets Magnetic Snap 13mm 15mm 18mm 20mm Sew in PVC Hidden Purse Closure Fastener Material:PVC Color:Photo Snap diameter: 13mm or 1/2" Square pvc size:28mm or 1.1" Quantity:10 Sets snap is covered with a PVC for sewing your snap into your application.&lt;br&gt;Magnetic Snap Purse Closures, book, Leather, Fabric and so on