They look a lot like...
...18" Technomagnesio Detroit F1s (but I don't think they are)
. They look just as sharp when they're moving. Here are some pictures:
http://www.elitedirect.com/technomagnesio-stuff/tecno-detroit-f1.stuff/TecnoDetroitF1.html#
http://www.mini2.com/forum/attachment.php?attachmentid=10023
http://www.mini2.com/forum/attachment.php?attachmentid=23175
...18" Technomagnesio Detroit F1s (but I don't think they are)
http://www.elitedirect.com/technomagnesio-stuff/tecno-detroit-f1.stuff/TecnoDetroitF1.html#
http://www.mini2.com/forum/attachment.php?attachmentid=10023
http://www.mini2.com/forum/attachment.php?attachmentid=23175