Blanco Flushmount/Inset Claron or Zerox sink fixing

Hello,
Has anyone fitted a Blanco Flush or Inset mount sink like the Claron/Zerox 450 F or 450 IF?
AS I'd like to know what the fixing kit is like, do they just stick down or are there some fixing that go under the worktop to pull it down?
Many thanks imk