Review on DTECH 100ft Fiber Optic HDMI Cable | 4K 30Hz, 1080p 60Hz HD Video, 3D HDCP CEC | High Speed Support | 100 Feet, Black by Ronald Orear

These are very good and very high quality HDMI cables. The ends appear to be metal covers and feel very strong. We ordered three cables (two 50ft and one 75ft) and all cables work great at 4K. They are pulled through a pipeline in an office building for presentation displays. A smaller rope diameter makes tensioning easier. The HDMI ends are slightly longer than a regular HDMI cable, but not by much. My guess is that it has to do with the additional electronics at each end to convert the signal to optical. Also, the cables are directional and very clearly marked (both labeled on the cable and printed on the ends).