These oversized safety pins were traditionally used for securing horse blankets, heavy fabrics, or industrial applications. In fashion and jewelry, similar large pins have been repurposed to hold charms, pendants, or grouped brooches, functioning as an alternative to traditional chain necklaces or charm bracelets. The sturdy metal frame provides a base for attaching multiple dangles, making them a popular choice in DIY and alternative jewelry styles. These pins were widely produced in the mid to late 20th century, often in steel or nickel-plated brass for strength and longevity.