This locking pin back. The pin back is made of solid materials. It is safe and durable. It can serve you for a long time without being easily . It is an excellent locking pin back that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Assorted Color -Material:Copper -Size:1.10X1.10X0.80cm/0.43X0.43X0.31in - Easy to use, no tools required which allows you to install and remove it easily, handy and convenient for use. - They are good supplies for making DIY crafts. The pin back is tight and not easy to fall off. - These clutch back can be applied to tie tacks, badges, lapel pin, and jewelry making, etc. - It can be applied to lapel pin, tie tacks, service bars, jewelry making, etc., perfect for diy making. - Good replacement for lost backs badges, name tags, etc., very practical and useful. Easy storage in a portable metal box. Package list: Pin Backs with Pins