Large square sew‑on snaps sized 21mm (7/8") suited to coats, capes, heavy cardigans and décor projects needing a stronger, easy‑to‑sew closure. Each part has four sew‑through slots for secure, even stitching and consistent alignment. Rust‑resistant metal construction offers a smooth action and a clean look without visible buttons. Use on wide plackets, pocket flaps and cushion backs for a crisp, modern hardware finish.