This ELAN shank button is a sew-on closure for garment repairs, tailoring, and craft projects where you want extra thread clearance behind the button face. It measures 23 mm (7/8 in) in diameter and comes carded as 2 count, with a shank back that helps the button sit comfortably over thicker plackets. Select the diameter that matches your buttonholes, then sew through the shank and secure the thread tails; wipe clean with a soft cloth if needed.