Size: 4 sizes (20 mm*10*2, 25 mm*10*2, 32 mm*10*2, and 38 mm*10*2)
Wide application: pin backs can be glued onto most surfaces to DIY crafts, suitable for jewel crafting, sewing fabric, making corsage, name badges and more
Easy to attach: these pin backs with 2 or 3 holes, and their backs are flat, so you can stick the attached crafts with glue, or sew the hole directly