Sturdy size‑4 snaps for heavier garments and accessories that need a stronger hold. The 13 mm diameter is well suited to jackets, workwear, and bag flaps where a button or magnetic clasp is not desired. Nickel finish pairs readily with metal zippers and rivets. Six complete sets per card provide the right quantity for key stress points on a project, from cuffs to pocket closures, while keeping inventory economical for small‑batch production and repair stations.