Probably the same as Formula/Miche*/System EX. They're fine and hold up well for commuting. Bearings are cheap to swap out.
*Only Miche seem to have the brittle locknut problem. If you buy Miche track hubs, change the locknuts for some other metric locknuts, or you could be in for a world of pain when fixing a puncture. The locknuts literally snap in half, making the wheel impossible to refit.