High quality material: The upgraded locking pin is made of high-quality copper, sturdy and designed to securely hold your pin in place. Easy to use: Featuring a spring latch design, these pins can be locked and removed without tools. Simply push the base to lock and secure the pin, and pull to release and remove. Secure pin attachment: The back provides added security for your pins, ensuring they stay firmly in place. Unlike traditional pin backs, these feature a secure buckle design to help prevent loss. Wide application: Suitable for lapel pins, name tags, badges, enamel pins, lanyards, bags, hats, vests, backpacks, and other accessories. Value pack: Includes 60 pin backs. Each measures 0.4 inches in diameter and 0.25 inches in height, compatible with most standard pin sizes and styles. Material: Copper. Color: Silver. Package contents: 60 x pin backs. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.