Scope of use: Mainly used in leather, vests, jackets, hats, work clothes, lanyards, bags, cards, will be very convenient, you don't have to worry about the pin falling off or lost.
The product is very easy to connect, just put a pin holder behind the pin, and then use a wrench tool to tighten it, the whole process is labor-saving and time-saving.
The product package contains: 30 pieces of pin backs and 3 pieces of locking tool wrenches.