Small Size- Pin Length is 8mm, pin head diameter is 4mm; Pin backs diameter is 11mm, 7 mm in height.
High Quality Material- Made of durable nickel-plated copper; Put the pin in the metal pin backing, your items will keep pinned securely.
Easy to Use- Butterfly clutch with spring fastener slices allow you easy to install and remove, handy and convenient for use.
Widely Applicarion- Pin+pin locking good for making clay pins, lapel pins, tie tacks, badge insignia, citation bars and jewelry making, etc.
Complete Pin+Pin Back Kit- These Metal Tacks fulfill the need to hold that jewelry, If you any questions with our pin locks, please do not hesitate to contact us!