Everyday shank buttons sized 13mm (1/2") and packaged 4 per card for apparel repairs and new makes. The durable synthetic construction resists chips and washing, while smooth edges feed cleanly under the presser foot. A classic profile suits shirts, knitwear and accessories. Keep a card on hand to match replacements and to add a tidy, unobtrusive finish to projects. Designed for reliable performance in busy sewing rooms, it stores neatly and maintains appearance after laundering and routine.