Clausing Collet Chuck and Collets

Does the collet chuck for the Clausing ( or Shark) Lathe use 5C Collets?

Do we have any hex collets?

I need to turn some hex stock, and I can use a 3 Jaw, but I’d prefer to use a Hex collet and stop.

We have 5C collet chucks for both machines. I can not say with any certainty that we have hex collets.

I know we have some square collets because I have used them . I am 67% convinced that we have at least 2 hex collets .