Classic 4‑hole sew‑through buttons designed for secure attachment. Card includes 3 button(s) measuring 18 mm (3/4 in). The flat profile lies cleanly on shirts, uniforms and trousers, and four holes allow cross‑ or box‑stitching to spread stress for extra strength. Great for mending, school uniforms and handmade garments, as well as craft and bag projects. Sew by hand or machine; use appropriate needle and thread weight for your fabric and reinforce high‑stress areas as needed.