This ELAN shank button is a sew-on closure for jackets, sweaters, dresses, and bags where a raised shank helps the button sit neatly over thicker fabrics. Each card includes 4 button(s) sized 9 mm (3/8 in) so you can match your buttonholes and spacing with confidence on finished projects. Hand sew with strong thread and reinforce on the underside; test placement before stitching to keep closures straight and comfortable in wear.