This locking pin back. The pin back is made of solid material, safe and durable, which can serve you for a longtime without being easily . It is an excellent locking pin back that can bring you more convenience, allowing you to have a more comfortable experience. Features - Color: Black -Material:Plastic, Metal - Size: 5.00X1.50X1.00cm/1.97X0.59X0.39in - Note:with backing adhesive - Great for use as lapel pin backs, brooch pin backs, tie pin backs hat pin backs, fits on tie tacks, badge pin, name tag, etc. - Manufactured with good and practical material, sturdy and practical for a long using time. - With smooth opening and closing, the replacement pin back is well secured, safe to use. - Also can be used for jewelry making and DIY craft projects, very professional to use for DIY. Suitable for pin, badge, and jewelry replacement. - Mini safety pin back clutch. Lightweight and portable design, which is easy to carry and store. Package list: 10 x Pin Backing Bars