Working

Remove the lower collar (C),whose function is to protect the "worm" (piercing tip D). Lean with the hand the corkscrew on the cork of the bottle trying to set the "worm" int the center.Push a bit.
Then turn the superior collar clockwise until the complete extraction of the cork from the bottle.To take off the cork from the crockscrew,just turn the collar counterwise.
An important charateristic of Moretto is that the operations of screwing and unscrewing for the extraction of the cork is helped because of the pilow block set inside the body "B",in the superior part.