I bought this a couple of days ago, on a whim. I've used it once so far, but not for the advertised purpose*, although I will certainly do that in the future. From hanging hole end to end of 'blade' it is 36.5cm / 14.5 inches and the "blade" is 18cm / 7 inches wide at its maximum.
* But for culinary purposes, I hasten to add. Behave yourselves!