Professional tool — Fiber Optic Cleaver, model FC-6S. This is a high-precision tool designed for making accurate 90-degree cuts on single-mode and multi-mode optical fibers prior to the splicing process. It features a simple operation mechanism and ensures a perfectly flat cleave, which is critically important for high-quality fiber optic splicing and minimizing signal loss. The tool is compact, reliable, and widely used in FTTH installations and fiber optic network construction.