A method for performing operations on items (A) transported along a manufacturing line including feeding a sequence of items (A) with respective resting portions along a first feed path onto a first transport surface, arranging a gripping assembly having a first gripping head and a second gripping head, picking up a first item (A) from the first feed path using the first gripping head, rotating the first item (A) around a first rotation axis (R1), performing at least one operation on the item (A) during the rotation thereof around the first rotation axis (R1), swapping the positions of the first gripping head and the second gripping head, resting the first item (A) on a second transport surface and releasing the first item (A), and picking up a further item (A) from the first feed path using the second gripping head.