Origin and Symbolism 

The description, as well as the accompanying picture, don't seem right to me.  First, I've never heard of a fasces with two axes.  A double-headed axe is relatively common but it is always described as such, not as two separate axes.  Second, the image, which is a nice picture someone took the time to create, assumedly for this article, shows the axe tied to the outside of the bundle where the traditional description and depictions in heraldry show the axe handle being surrounded by the bundle of rods, the primary reason for its symbolism of strength.