I used fish tape to route coax cable through a cable tray under my RV. It worked very well but I have to question the durability of the tensioners. I don't think it's made for commercial use, but it seems fine for casual use. I used a cable loop tensioner and the cable loops were already kinked. It doesn't seem to have compromised the loop yet. In my application, accessibility was poor and the bars had to be springed almost to the max, but they worked well. You lose some flexibility in the rods near the threaded ends, but it worked fine in my application.
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