These pin backs are made of heavy- metal, making them ideal for use different pins. The locking mechanism ensures a , preventing them from slipping or falling off. These metal pin backs can be used widely to make brooch pins, lapel pins, and other decorative pins that require extra security. Features -Color:Assorted Color -Material:Metal -Size:1.10X1.10X0.50cm/0.43X0.43X0.20in - : The built-in locking mechanism of these butterfly pins offers a dependable layer of security, assuring that your pins remain steadfastly affixed to the object. -Enhanced durability: Crafted from robust metal, these clutch tie tacks exhibit great resilience and longevity, enduring various weights and extensive use. -Effortless attachment: Boasting user-friendly locking pin backs, these accessories facilitate seamless attachment to your pins, ideal for all craft makers. - craftsmanship: Every pin back shows meticulous artistry invested in their creation, reflecting precision and excellence. -Versatile use: These adaptable pin backs find application in various crafting projects, seamlessly integrating with lapel pins, brooches, hat insignia, badges, etc. Package list: pairs of Butterfly Clutch Pins