Jeans I-shaped buttons are divided into rubber-core I-shaped buttons, single-needle I-shaped buttons, and double-needle I-shaped buttons. According to the foot, it can be divided into movable feet and inactive feet. The regular sizes are 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 22mm. These sizes will be used by some people. The more used ones are 15mm, 17mm, 19mm, 20mm. Different logos can be designed according to the requirements of customers. ,The colors are generally barrel plating, rack plating and baking varnish.