Pins size: 10mm in diameter; 10mm in length. Clutch backs size: 10mm in diameter.
Material: nickel plated brass, durable and sturdy
Great for tie tacks, badge insignia, citation bars, name tag, making corsage, toy pins, jewelry making, DIY crafts, etc No tools required: butterfly clutch with spring fastener slices allow you to install and remove it easily, handy and convenient for use