A hair extension plier is a specialized tool used to install, secure, and sometimes remove micro ring (or micro bead) hair extensions. It’s a crucial part of the micro ring application system, where small metal or silicone-lined rings are used to attach hair extensions to your natural hair — without glue or heat. hair extension plier is an essential tool used to clamp and secure micro ring hair extensions during installation and to remove or adjust them later. It’s specially designed for precision, comfort, and safety, making the micro ring method a clean, reusable, and heat-free extension option.