WINOMO 10 Sets of 15mm Sew In Magnetic Bag Clasps for Sewing (Bronze) Color: Bronze. Material: Hard alloy. Length: Approx:15mm.Hole size: 2.4mm x1.4mm; Thickness: 6.5mm. Each set is composed of two parts. Once the two snaps are in place, they will snap together when brought close together. Easy to sew in and convenient to use. Great for Sewing, Craft, Clothing, Bag, Scrapbooking, and more.