70 Pairs Silver Pin Backs Replacement，Mental Butterfly Tie Tacks, Perfect Blank Pin Keepers for Craft Making DIY Jewelry Making

Feature : These butterfly pin backs (and matching pins) offers a durable, versatile solution for craft/jewelry projects or replacing lost pin components. Made of nickel-plated brass, they feature an easy-to-use spring-loaded clutch, precise sizing for standard pins, and a secure hold—perfect for lapel pins, badges, or DIY creations. Specification: Material: Nickel-plated brass (sturdy, rust-resistant). Size: Pins: 0.39” (10mm) diameter, 0.53” (13mm) length Butterfly clutches: 0.43” (11mm) diameter Color: Silver Package Include：70 pairs of silver butterfly pin backs+matching metal pins. Note: Manual measurement, please allow slight errors on size The colors may exist slight difference due to different screen

• Ample Quantity & Versatile Use: 70 pairs of pin backs + pins, ideal for lapel pins, badges, name tags, jewelry making, DIY crafts, and replacing lost/damaged pin components.
• Durable Nickel-Plated Brass: Made of sturdy nickel-plated brass—lightweight yet secure, with a smooth silver finish that resists rust and maintains a polished look.
• Easy Butterfly Clutch Design: Spring-loaded butterfly trigger closure: simply insert the pin into the clutch, then press the triggers to release. Quick to install and remove.
• Precise Sizing: compatible with most standard pin styles.
• Secure & Reliable Hold: The butterfly clutch design locks pins firmly in place; the hole on the pin back ensures compatibility, preventing pins from slipping or falling off during use.