This ELAN shank button set is made for garment repairs and finishing touches on coats, cardigans, uniforms, and craft projects. The card includes 4 buttons sized 13 mm (½"") with a raised shank back that sits above the fabric, helping it work well on thicker layers or trim. Use a strong matching thread, stitch through the shank with several wraps under the button, and test placement on a scrap to confirm spacing and fit.