These ELAN shank-back buttons are designed for garments and accessories that need a slightly raised closure, such as coats, cardigans, uniforms, and bags. The set includes four 11 mm (3/8 in) buttons on a card, sized to suit small to medium buttonholes and to coordinate repairs across a placket. Hand-sew through the rear shank with strong thread, add a thread shank if the fabric is bulky, and check spacing against your existing buttonholes.