What is this?
These metal locking pin backs are 50 pairs packed in an aluminum box, widely used to make tie tacks, badge, jewelry making, DIY crafts, etc.

What will I get?
Metal Pin Backs, We Provide here, is in size of:
Diameter: 11mm/0.43 inch
Pin Diameter: 4mm/0.16 inch
Pin Length: 7mm/0.28 inch
Color: Gold Tone
Material: Metal
In the package of: 50 Pairs x Metal Pin Backs

Are there any advantages of the product?
Our butterfly clutch is designed with spring fastener slices, allowing you to install and remove it easily, and convenient for use. The butterfly clutch backs provides a secure hold on the pins, keeping them in place, and they are great replacements for lost or damaged pins.

How to use it?
Just put the pin in the metal locking pin backing, and your items will remain pinned securely.

What should I notice?
Please be careful of the pin when using the blank pin backs, to prevent yourself from getting pronged.