Classic ELAN two-hole buttons sized 20 mm (3/4 in) for shirts, cardigans and light outerwear. The 2-count card covers repairs, replacements and matching spares. A low-profile round shape lies flat, and clean drillings help stitches seat neatly for secure hold by hand or machine. Measure an existing button to match diameter, then test stitches on a fabric scrap to confirm spacing and tension before final sewing.