Yes they are called Group 1 Cranks, as for being any good
![Huh ???](http://www.radbmx.co.uk/forum/Smileys/smilies/huh.gif)
only from a collectors point of view.
I would say if you got £180 for a very good set you should be happy. they came on 86 Masters, but were replaced the next year with Peregrine's
![Cool 8)](http://www.radbmx.co.uk/forum/Smileys/smilies/cool.gif)
There were two types also Race & Freestyle.