... #, 18 #, 20 #, 60 #, etc.The standard formula: diameter = 0.625 Model * (mm). If there is a button in our hands , but ... buttons, Jeans buttons, Belt buckles, Rivets, Eyelets, Hooks, garment label and other metal products, which are widely used in belts, bags, shoes ... , clothes and other related products. We focus on delivering high quality products for ...