FTS-30-Clip is widely used to couple a signal into a fiber for end-to-end communication along the fiber. With the tool, the user can send and receive signal through fiber coating without breaking the fiber. It is a perfect device for the FibreOptica's talk set FTS-10 and FTS-20 to enable bi-directional voice communications on a duplex fiber. The user can simply clip the device onto a 0.25mm fiber.