Make sure to do your research before commenting too. From Cold Steel’s site:
“Cold Steel has produced a completely legal version of the butterfly knife that we call The Paradox®. Available in two sizes, it’s designed from the ground up to specifically mimic a traditional Balisong or Butterfly knife in every respect but one it can’t be opened with one hand! That’s right, the Paradox® is not a switchblade, gravity knife, or assisted opener and can’t be opened without the use of both hands. So, while it looks and feels like a classic Butterfly knife, it isn’t. It’s a legal Balisong!”
They may not be illegal to own but may have restrictions on how/where you can carry them.
Best to understand your local laws before carrying one but they are not necessarily illegal to own and enjoy at home.
Definitely pay attention to your local knife laws. The specs here list the blade length as 5.5 inches. Some areas (such as NY state) have a limit on blade length of 4 inches for folding blades. (source: http://pweb.netcom.com/~brlevine/sta-law.htm )
That being said, what’s the point of a balisong you can’t even flip? The whole advantage of this style of knife is the one-handed opening and latching mechanism to keep it securely open while working.
I own several Cold Steel products and I have personally put these blades to the test. I have yet to have one break, bend or crack. A great investment for personal protection or just collecting. Also, if these blades come straight from Cold Steel they will be sharp as razors so be careful upon opening!!