These locking pin clasps are designed for versatility, making them suitable for various applications such as jewelry making, badge assembly, and brooch . The spring mechanism allows for easy attachment and removal, ensuring convenience during use while maintaining a strong hold to keep your items securely in place. Features -Color:Silver -Material:Zinc alloy -Size:1.00X1.00X0.70cm/0.39X0.39X0.28in - spring buckle lock: the innovative spring buckle lock offers a dependable grip, ensuring your badge remains securely attached to clothing or bags. -Enhanced safety with metal pin: the metal locking pin adds an extra layer of protection, minimizing the risk of losing your badge during physical activities. -Quick and convenient replacement: replace old or broken pin backs effortlessly with this userfriendly design, saving time and maintaining badge functionality. -Minimalist design for aesthetic appeal: the compact size and refined finish blend seamlessly with your badge, preserving its original charm and elegance. -Ideal for multiple uses: suitable for lapel pins, brooches, and badges, this versatile accessory adapts to various styles and purposes with ease Package list: 40 x Locking Pin Backs Metal