This ELAN shank button provides a raised attachment point that keeps stitching hidden on the front of garments. Each card has 4 buttons sized 13 mm (1/2 in) for coats, cardigans, knitwear, costumes, bags, and repairs for tailoring, decorative accents, and sturdy closures. Use strong doubled thread through the shank, knot securely, and check the diameter and thickness against your buttonhole and fabric care label.