Here is the info....they are basicaly drop forged versions.....crap IMO. I had something similiar at one time. The tone will be duller than the FRO.
The Floyd Rose II - With Fine Tuners
The II units were used on some of the later model overseas Strikers, Focus, 100, and 1000 series Kramers While these trems are not necessarily "crap", they are not as good as the original since they are cast iron. They rust much easier, and the fulcrum points are metal inserts as opposed to being hardened and part of the actual trem metal itself. If you see a Kramer with one of these, it is NOT an American Series.
Get all the Floyd info you want here:http://www.vintagekramer.com/parts6.htm