These fasteners work great. They last through shipment and even weather. I use them at work all the time!
I use these for the crafts I sell. I take a business card, fold it like a book, burnish crease with bone folder, hole punch the corner and add fastener. It helps prevent theft and adds a professional look. It's the only way to label something that is fabric for sale. I don't know any other company that sells these.