Abstract: The apparatus for flanging and swaging both ends of a cylindrical can body has at least two axially opposing drivable flanging and swaging heads slidable into a can body each with a radially slidable wobbler braced centrally on a conical piece axially slidable against an inner spring. At least one wobbler comprises two ring members engaged in each other concentrically of which the outer one is stepped to form a circular shoulder for receiving the inner one. The outer ring member supports itself on a collar guided axially slidable along a spindle against an outer spring. The inner ring member, which has an outer diameter which is less than or about equal to the inner diameter of the unflanged can body, supports itself on one side on the conical piece and on the other side on a disk like abutting member.