1. Detach the tack. Pull the bottom round disc to the loosest, and separate the tack and base. 2. Thread the button pins tack through the fabric, and snap the button pins tack to the bace. * Jean button pins in our shop : 1. Jean button pin is made of metal material, double-sided electroplating process, strong and durable, beautiful and generous. 2. We admire the spirit of the craftsman and tirelessly polish such a stunning masterpiece with our hands. Although the cost is expensive, we still use zinc alloy, just for durability. * Structure & details : 1. The jean buttons pin clever built-in spring allows a button to have a "removable precision structure" to realize the possibility of repeated use. 2. Even for a small card needle, we continue to polish and design, and finally developed the industry-leading "square groove cutting technology". * Easy To Carry : 1. The pant button pin has a variety of styles. It can be placed in a pocket or bag at will, or worn as an accessory. * Multiple Uses : 1. You can adjust pant button pins to whatever fabric of pants you wear, whether it is jeans, slacks, skirts, denim, corduroy, suede and leather. * No sewing needed! : 1.No need to worry if your pants button pin goes missing or if you buy the wrong pants size waist! You can easily reduce or extend your pants waist with our jean button replacement!