ELAN brand sewing button set sized 13mm (1/2"). Shank buttons have a raised loop on the back that creates thread clearance, helping thicker fabrics drape smoothly and reducing abrasion on the button face. Each retail card includes 2 buttons in 13mm (1/2"). Use for clothing repairs, replacements, or new projects including shirts, cardigans, uniforms, and light outerwear. Check buttonhole size before installation and test placement on a fabric scrap.