30 Pcs Silver Locking Pin Backs - Metal Badge Keepers with Flat Head Clasp for Jewelry Brooches, Pins, Lapel Badges Crafts DIY

【Easy to Install and Remove】No tools required. Simply push the base to lock the pin securely, and pull the spring-loaded flange to release it quickly, making it convenient for daily use. 【Locking Mechanism】Designed with a flat head clasp and spring-loaded fastener, these locking pin backs keep your valuable pin badges and brooches firmly in place without falling off. 【Universal Fit Size】With an upper diameter of 10mm, lower diameter of 7mm, and height of 7mm, these locking backs fit lapel pins, tie pins, and badge pins. 【Zinc Alloy】Made of high-quality silver zinc alloy, these pin badge backs are sturdy, rust-resistant, and durable, providing a reliable replacement for lost or broken rubber pin backs. 【Versatile Applications】This 30-piece set is ideal for securing pins on jackets, hats, bags, lanyards, and vests, as well as for jewelry making, DIY crafts.