A method of forming a profile in a metal ring for use in a two part metal closure comprising the ring and an independently formed metal panel, wherein the method comprises: sliding the ring over a cylindrical pushing tool, the cylindrical pushing tool comprising a ledge, against which one end of the ring seats, and a plurality of protrusions corresponding to positions of lug portions to be formed, wherein each of the plurality of protrusions is shaped for forming a side of a corresponding lug portion into an angle corresponding to a thread of a jar onto which the metal closure is to be applied; and pushing a second end of the ring into a forming tool to form the profile comprising the lug portions and curl portions in the second end of the ring, wherein each of the lug portions is at least partially formed by one of the plurality of protrusions, wherein the forming tool comprises one part having a profile corresponding to the shape of the curl and lug portions and a separate cylindrical internal part to limit the inward movement of the lugs and control the distance between opposing lugs, wherein the profile corresponding to the shape of the curl and lug portions comprises: a curl profile corresponding to the shape of the curl, profiled to bend the second end of the ring inwards for forming the curl portions and a plurality of lug forming profiles, wherein each lug forming profile is configured to bend the second end of the ring inwards to at least partially form a corresponding one of the plurality of lug portions. sliding the ring over a cylindrical pushing tool, the cylindrical pushing tool comprising a ledge, against which one end of the ring seats, and a plurality of protrusions corresponding to positions of lug portions to be formed, wherein each of the plurality of protrusions is shaped for forming a side of a corresponding lug portion into an angle corresponding to a thread of a jar onto which the metal closure is to be applied; and pushing a second end of the ring into a forming tool to form the profile comprising the lug portions and curl portions in the second end of the ring, wherein each of the lug portions is at least partially formed by one of the plurality of protrusions, wherein the forming tool comprises one part having a profile corresponding to the shape of the curl and lug portions and a separate cylindrical internal part to limit the inward movement of the lugs and control the distance between opposing lugs, wherein the profile corresponding to the shape of the curl and lug portions comprises: a curl profile corresponding to the shape of the curl, profiled to bend the second end of the ring inwards for forming the curl portions and a plurality of lug forming profiles, wherein each lug forming profile is configured to bend the second end of the ring inwards to at least partially form a corresponding one of the plurality of lug portions. a curl profile corresponding to the shape of the curl, profiled to bend the second end of the ring inwards for forming the curl portions and a plurality of lug forming profiles, wherein each lug forming profile is configured to bend the second end of the ring inwards to at least partially form a corresponding one of the plurality of lug portions.