The ThinkLogical DVI X-TENDER Single Fiber VIS-13 Digital Video Extension System is a high-quality product designed to extend the reach of digital video signals. Made by the reputable brand ThinkLogical in the United States, this DVI extender system utilizes a single fiber to transmit video signals, ensuring reliable and clear video transmission. The model is specifically designed for single fiber extension, making it ideal for professional use in various video setups. This product is a valuable addition to any TV, video, or audio equipment setup, providing flexibility and ease of installation.