This item is a pack of 10pcs backs with good quality for practical and long-term use. Made of top-class metal, they are of sturdy construction and smooth finish. These secure pin locks are great for pins, name tags, displaying books, lanyards, bags, vests, hats, badges, lapel, and jewelry, etc. Features - Color: White nickel. - Material: Metal. - Size: Approx. 1 x 1 x 0.6cm/ 0.39 x 0.39 x 0.24 inch (LxWxH). - Contains 10pcs backs. - Made of top-class metal, they are of sturdy construction and smooth finish. - Easy to use, keep your safe. No tools required. - for pins, name tags, displaying books, lanyards, bags, vests, hats, badges, lapel, and jewelry, etc.Package list: 10 x Locking Pin Backs Metal Locking Clasp Pin Keepers for Displaying Badge Books Hats Bags (White Nickel)