The PRO Line features the newest technology offered by Fiorenzato and is undoubtedly one of the coolest innovations in coffee grinders. It allows the grinding chamber to be detached with the release of two levers - this makes cleaning really easy! It's also a better approach to accessing the burrs when you need to remove a foreign object or replace them. Most importantly, you DO NOT lose your settings by detaching the grinding chamber. This patented design empowers the barista to perform maintenance needs effortlessly.