Product name: 120 set of eye buckle+installation tool 3 -piece set combination. Packaging content: 120 sets of eye eyes (one set contains 2 parts)+3 installation tools+a box of storage box. Material: environmentally friendly pure copper, thick materials. Tools: The installation tools are made of hard stainless steel, the punching tools are special steel, and special tools are treated at the mouth. It is not easy to deform and not easy to become blunt. Durable. Specifications: 12mm (inner hole diameter), the outer diameter 20mm, the height of the buttons 4.3mm. Box specification: 17.5*9.8*2.2cm. Used: Home Repair, Clothing Store Spare. The buttonholes are made of high quality metal and can be used for a long time. Each set of eyelets and metal gaskets fit together well.