It is made of high-quality and environmentally friendly raw materials, and the quality of the production process is strictly monitored; the mother pin and the father pin are fixed with a washer; the main specifications are 14mm, other sizes are 18mm and 10mm, and the ultra-thin thickness has strong magnetic attraction; the plating is exquisite, and it can be hung plated and roll plated; nickel color-golden-gun color-green copper-black nickel bronze, etc.