These ELAN shank buttons are designed for garment sewing and careful repairs on shirts, jackets, knitwear, and accessories where a dependable closure matters. Each card includes 4 button(s) measuring 12 mm (1/2 in) across and using a shank-back style to sit neatly on the fabric while allowing smooth fastening. For best results, match the diameter to existing buttonholes, stitch with strong thread, and secure knots on the inside to reduce loosening over time.