Apparatus (10) for roll forming to neck-in D&I can ends and replace double necks and triple necks is disclosed. An externally-disposed freely rotatable roller (11) is moved inwardly and axially against the outside side wall adjacent the open end of a trimmed can body. A spring-loaded interior support roller (24) moves under the forming force of the roller (11) while the body end is borne on and rotated by a rotationally driven support (11). The rollers (11 and 24) have coacting profiles and, as roller (11) is moved in the inward direction and while the can rotates, a smooth conically necked end and flange are produced in the side wall at the end of the can body.
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