The secure pin backs are suitable for pins, insignia, name tags, display books, lanyards, bags, vests, hats, badge, collectibles, etc. It can be used for a long time, and has a smooth surface without burrs and will not scratch clothes.It is simple in design, but it's practical to use, which will give you a good use experience. Features -Color:Silver -Material:Metal -Size:1.00X1.00X0.60cm/0.39X0.39X0.24in -Easy to use, no tools required, 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, lapel pin, badges, service bars, and jewelry making, etc. -It can be applied to lapel pin, tie tacks, service bars, jewelry making, etc., which is perfect for crafts making. -Good replacement for lost backs badges, name tags, etc., very practical and convenient to use. Package list: 22 x Pin Keepers