In the description they say it's good for use as an "air line". What they mean is that it can be used for both liquid and CO2. But be advised that 1/4" ID tubing will not work well for kegerator applications. The 1/4" ID stuff is fine for gas lines (of any length) or liquid lines if your kegs are located remotely from the taps.
In a kegerator where the taps are within a few feet or so from the kegs the 3/16" ID beverage line is what you need.