Material and durability - Made of high-quality brass for rust resistance, durability, and sturdy performance. They lock pins firmly to keep them in place. Easy, tool-free installation - Spring fasteners provide simple installation and removal with no tools required. Align the pin with the small hole and push to lock onto the post; to remove, pull to loosen the lock. Secure protection for your pins - These locking pin backs add an extra layer of security, helping your pins stay securely attached to clothing, lanyards, bags, and other items. They reduce the risk of pins loosening or being lost. Wide compatibility and applications - Suitable for a variety of uses and pin styles, including pushpins, lapel pins, name tags, display books, lanyards, bags, vests, hats, jean buttons, badges, enamel pins, and DIY crafts. How it helps in daily use - Keeps favorite pins reliably attached during work, travel, events, or everyday wear. - Quick and easy to secure or remove when changing pins or outfits. Use scenarios - Conference or event name tags: attach with confidence so tags stay in place through movements and handling. - Everyday wear on hats, vests, or bags: prevent pin loss during outdoor activities or travel. - DIY pin projects: secure multiple pins on fabric or accessories with a professional, tidy finish.