What are back post pin and introduction of back pin of pin badges

Back post pin

Used for pas through clothing and fixed with butterfly clutch, ruber clutch and other clutches

1. Length in 8, 10, 12 and 14mm and 8mm in default
2. Material: alloy, brass
3. Color: gold and silver
4. Using soldering tin weld it on the back of the badge
5. Glued post pin for printed pins
6. A small cloth stop at the bottom of back post pin

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