ELAN button card sized 13 mm (1/2inch) with 4 per pack provides a reliable, easy-to-sew closure for everyday garments and accessories. The classic 2-hole sew-through design sits flat, feeds smoothly under a presser foot, and secures with straightforward stitches. Use on shirts, cardigans, skirts, light jackets, uniforms, kidswear, bags, and craft projects. Match the diameter to existing buttonholes and test stitch length and tension on a scrap for consistent results.