The package shows it's sufficient for a gate 6 feet tall and 4 feet wide. You only have to loop part of the wire back (it doesn't double on itself completely). However, the poor quality of this device is such that the length of the wire doesn't really matter. The piece that rotates is aluminum, while the screws appear to be stainless steel. When I tightened it, the screws were ripped from the aluminum body of the piece that rotates. I thin this is junk... made in China. Actually, it's more like a novelty device. It looks like a device that has a real purpose, but it really serves no useful function.
This item will have up to 7.5 foot diagonal bracing.
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