The Tachyon II is available with another blade shape—tanto! The Tachyon comes with block spacers, which is different than the original version. This butterfly knife has a really nice center of gravity, and it has most of the same specs as the original. The tanto is a really nice addition to its 154CM blade, and I have to say, it looks awesome. Check out the Tachyon II at Blade HQ, and watch the video below to get more of a feel for the knife.