Pin Backings 300pcs Black Rubber Backs and 4/10/15mm Blank Round Base Pins for DIY Brooch Jewelry Making Supplies Deco Parts Materials

1.Material:Rubber2.Color:As shown3.Size:10.6X7.6mmNotice:1.1cm=10mm=0.39inch.2.Please allow 1-2mm error due to manual measurement and make sure you do not mind before ordering.3.Please understand that colors may exist chromatic aberration as the different placement of pictures.

• Lock in a Secure Hold with Spring-Loaded Design: The built-in spring mechanism of the clutch produces stable tension to grip the pin post tightly, effectively preventing accidental detachment and keeping your lapel pins, badges and name tags securely fixed all day long
• Offer Long-Lasting Durability with Metal Construction: Made of nickel-plated copper, these pin backs are suitable for repeated use; the metal structure is resistant to bending and deformation compared with plastic products, providing a firm and reliable fastening for your valuable pins and insignias
• Deliver Effortless One-Handed Operation: Designed for quick mounting and dismounting, you can easily press the clutch lever to open, slide it onto the pin post and release to lock. The intuitive push-to-lock and push-to-release operation enables fast and simple pin replacement or adjustment without any tools
• Present a Complete and Organized Kit: The product includes a practical number of clasps packed in a sturdy storage box, which keeps your pin backs neatly stored, avoids loss and ensures you always have spare parts for replacement or new handicraft projects
• Provide Versatile Fastening for Multiple Applications: The universal clutch design is compatible with standard pin posts, making it an ideal fixing solution for lanyard badges, uniform insignias, decorative brooches, hat pins and DIY craft projects that require reliable backings