Abstract: Apparatus for forming beads in the cylindrical wall of a metal drum blank comprising a die head and an opposed roller, for engaging the interior and exterior surfaces, respectively, of a cylindrical drum blank. The die head has first, second and third coaxial, circular dies, each made up of plural, wedge-shaped die elements. The roller has two coaxial peripheral edges cooperable with the dies to form a W-style bead. The second die is located between the first and third dies and is radially expansible, by the frusto-conical surface of a cam, for producing a standard bead. The same frusto-conical surface also expands the first die, and a separate frusto-conical surface expands the third die. Lands on the cam engage the wedge-shaped elements of the first and third dies and maintain the first and third dies at fixed radial positions in engagement with the inner cylindrical wall of a drum blank, while the cam continues to urge the wedge-shaped elements of the second die radially outwardly.