This ELAN 4-hole sew-through button is made for a stable closure on apparel and accessories that may see regular use and repeated fastening. The card includes 3 button(s) at 18 mm (3/4 in), and the four-hole layout supports neat cross or parallel stitching for cardigans, uniforms, and repairs. Choose thread suited to the fabric weight, sew the button on square to the placket, and check the buttonhole fit before finishing the garment.