It was difficult but I got them working with my Vortex Daimondback binoculars. First I threaded a strong carpet thread through the bino mounting hole from below. Then I thread the thread through the connecting hole without the metal ring. I then threaded the thread back through the top of the bino mounting hole. I wound the free end of the thread onto a spool (so as not to cut my fingers) and tightened. I then used a set of vises to pull the harness connector through a little over halfway. I then threaded a metal ring through the open hole so the two ends of the straps lay flat on top of each other. But it wasn't easy!
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