Doing my deck railing with this cable and other connections I found on Amazon made my deck look better, and was actually cheaper than using wood balusters. Would 100% do this again. Tip: buy good cable cutters and a crimper tool.
I've had it on my outside 100 foot 72 stair stairwell at the Lake for 3 years and no rust is showing. Must have been a bad batch or it got something spilled on it the other guys mentions.