The buckle or clasp is a device used for fastening two loose ends, with one end attached to it and the other held by a catch in a secure but adjustable manner.[1] Often taken for granted, the invention of the buckle was indispensable in securing two ends before the invention of the zipper. The basic buckle frame comes in a variety of shapes and sizes depending on the intended use and fashion of the era.[2] Buckles are as much in use today as they have been in the past: used for much more than just securing ones belt, instead they are one of the most dependable devices in securing a range of items.1. The roller needle button adopts automatic voice equipment, from production, die-casting combination, polishing, electroplating and a set of production lines, but also adopts a 24-hour shift work system, in the assembly equipment has applied for more than 100 patents, these advantages allow us to improve production efficiency;  More professional quality inspectors are responsible for inspecting goods to ensure speed and quality together. 2. As shown in the picture, the pull button is gold, we can adjust it according to your requirement.  Common colors include gold, rose gold and silver.  The usual size is 25 mm.  If the product needs other special color or size, please inform in advance;  We accept custom products.  3. After making the roller needle buckle, we will pass the logistics test and salt spray test to ensure that the test requirements of customers are met.  This product is mainly used in daily life.  This product can choose different materials, such as zinc alloy, iron, aluminum alloy, etc.  The universal color is silver, gold, rose gold, black.  The common size is 20mm, the product can be used with different products, the product is mainly used for daily life adjustment fixing and decoration, such as lady belt, pet belt, bag adjustment buckle and so on.