This product is a set of 25 black PVC rubber pin backs or safety backs specifically designed for brooches, ties, hats, badges, and insignias. The snap clasp style makes them easy to attach and secure, with dimensions of 0.8cm in length and 1cm in width. Made of durable rubber material, these pin backs are ideal for crafting and jewellery making projects, providing a secure and reliable fastening solution for various accessories. Manufactured in China, these unbranded pin backs offer a simple and effective way to attach and display your trinkets and insignia with ease.