A metering device for powdery or pasty substances with a withdrawal vessel and a metering head connected or connectable thereto, which head has a housing with an outlet opening (7, 107) provided with a circular cross-section and a discharge and closure member, wherein the outlet opening (7, 107) and the discharge and closure member are arranged on a central longitudinal axis of the metering head, and wherein the discharge and closure member is rotatable relative to the housing about the central longitudinal axis of the metering head and is designed to be translationally displaceable along the central longitudinal axis of the metering head with respect to the housing, wherein the discharge and closure member - is cylindrical in its basic shape, - has a closure region serving to close an outlet opening, - has a discharge region arranged adjacent to the closure region and serving to discharge substance to be metered and forming a cylindrical outer surface, and - has a shaft region arranged adjacent to the discharge region, and wherein the closure region is arranged below the discharge region in the operational state and forms an end face at the lower end of the discharge and closure member, and wherein the discharge region is provided with a recess extending from the shell of the basic cylindrical shape of the discharge and closure member, characterized in that the discharge and closure member further comprises a supply body integrally formed on the cylindrical outer surface of the discharge region and serving to supply the substance to the outlet opening, and in that the recess extends over the discharge region and the integrally formed supply body, thereby forming a continuously extending discharge surface, wherein the discharge surface forms part of a circumferential surface of a recess with a cylindrical basic shape, wherein the central longitudinal axis of said cylindrical basic shape defines the discharge direction (A R) of the discharge and closure member in which the powdery or pasty substances leave the discharge and closure member in operation during discharge, and wherein the supply body is arranged from the central longitudinal axis of the discharge and closure member in the discharge direction (A R) or in reverse continuation of the discharge direction (A R). wherein the discharge and closure member - is cylindrical in its basic shape, - has a closure region serving to close an outlet opening, - has a discharge region arranged adjacent to the closure region and serving to discharge substance to be metered and forming a cylindrical outer surface, and - has a shaft region arranged adjacent to the discharge region, and wherein the closure region is arranged below the discharge region in the operational state and forms an end face at the lower end of the discharge and closure member, and - is cylindrical in its basic shape, - has a closure region serving to close an outlet opening, - has a discharge region arranged adjacent to the closure region and serving to discharge substance to be metered and forming a cylindrical outer surface, and - has a shaft region arranged adjacent to the discharge region, and wherein the closure region is arranged below the discharge region in the operational state and forms an end face at the lower end of the discharge and closure member, and wherein the discharge region is provided with a recess extending from the shell of the basic cylindrical shape of the discharge and closure member, characterized in that the discharge and closure member further comprises a supply body integrally formed on the cylindrical outer surface of the discharge region and serving to supply the substance to the outlet opening, and in that the recess extends over the discharge region and the integrally formed supply body, thereby forming a continuously extending discharge surface, wherein the discharge surface forms part of a circumferential surface of a recess with a cylindrical basic shape, wherein the central longitudinal axis of said cylindrical basic shape defines the discharge direction (A R) of the discharge and closure member in which the powdery or pasty substances leave the discharge and closure member in operation during discharge, and wherein the supply body is arranged from the central longitudinal axis of the discharge and closure member in the discharge direction (A R) or in reverse continuation of the discharge direction (A R).