LICQIC Locking Pin Keepers Backs, Metal Pin Badge Backs for Jewelry Brooches Badge Name Tags Crafts DIY, 30 Pcs Silver

Locking needle backs: The needle hole is approx. 1 mm in diameter, the upper part of the needle back is approx. 10 mm in diameter, the lower part is approx. 7 mm in diameter and the height is approx. 7 mm Durable and robust: The pin badge back is made of brass, which makes it robust and rust-resistant Easy to use: The pin badge locking backs are easy to use as they do not require tools. Simply push the base to lock it in place or pull the base to pull out the badge Versatile use: These pin backs locking is perfect for DIY crafts, badges, baffles, jewellery making, display books, bags, jackets, vests, hats and more Fix your items: It replaces broken screws or locking devices on your brooches, badges etc. so you can use them again without having to choose to discard them