ELAN brand sewing button set sized 13mm (1/2"). Shank buttons have a raised loop on the back that provides thread clearance so thicker fabrics drape smoothly and the button face avoids abrasion. Each retail card includes 4 buttons in 13mm (1/2"). Use for clothing repairs, replacements, or new makes including shirts, cardigans, uniforms and light outerwear. Check buttonhole size before installation and test placement on a fabric scrap.