i've heard on another forum that those are the same things as those FRT-x000 trems which are put on schecters, MIJ Jacksons, Edwards, those new Charvels and the like. Could be wrong, but the guy sounds like he knows what he's talking about. i think they're made in Korea... if true it's incredibly gippy, as all the companies fitting them are describing them as "Original Floyd Rose" trems...