With their secure locking mechanism, these brass pin backs are ideal for keeping your pins in place. The butterfly clutch design ensures a tight fit, preventing your pins from slipping or falling off. Suitable for a variety of accessories, including brooches, lapel pins, and hat badges, these pin backs offer a dependable and stylish solution for all your pinning needs. Features -Color:Golden -Material:Copper -Size:1.10X1.10X0.60cm/0.43X0.43X0.24in -Brass: these pin backs are made from brass, providing a reliable and sturdy hold for your pins -Secure clutch design: the butterfly clutch mechanism ensures your pins stay securely in place, preventing accidental loss -Elegant detailing: with meticulous craftsmanship, these pin backs feature fine detailing that adds sophistication to your accessories -Versatile for any occasion: for business meetings, formal dinners, weddings, and more, these pin backs offer versatile use -Style: easily pair these pin backs with your favorite pins to create a unique and look Package list: 100pcs pin butterfly hat