An oil scraper ring for being mounted in an oil ring groove of a piston, comprising: an oil scraper ring spring, said oil scraper ring spring comprising: a plurality of upper portions and a plurality of lower portions which are alternately arranged in a circumferential direction such that they are spaced in an axial direction; connecting portions each connecting the adjacent upper and lower portions (10, 12) to each other; wherein each of the upper and lower portions (10, 12) has a nose section which is arranged at the inner circumferential end and is designed to press a respective abutting upper or lower metal ring (6, 8) radially outwards, and has a support section (20, 22) which extends radially between the nose section and the outer circumferential end and is designed to have the respective upper or lower metal ring (6, 8) resting or abutting thereon; wherein an anti-rotation projection (36, 38) is provided on an upper and/or on a lower support section (20, 22), which extends upwards from the plane of the upper support section and, respectively, downwards from the plane of the lower support section and has a height which is less than or equal to the distance of the upper end of the nose section to the plane of the upper support section and, respectively, less than or equal to the distance of the lower end of the nose section to the plane of the lower support section, or less than or equal to the thickness of the metal ring (6, 8) to be placed on the upper support section and on the lower support section, respectively; and wherein the anti-rotation projection (36, 38) is designed as at least one material section which is bent outwardly from the upper and lower support sections (20, 22), respectively, and optionally is partially stamped or cut out from the same; an upper metal ring which rests on the the support sections of the upper portions of the oil scraper ring spring and the radial inner surface of which abuts the radial outer surfaces of the nose sections of the upper portions of the oil scraper ring spring; and a lower metal ring which rests on the support sections of the lower portions of the oil scraper ring spring and the radial inner surface of which abuts the radial outer surface of the nose sections of the lower portions of the oil scraper ring spring; wherein at least one of the upper and lower metal rings (6, 8) has respective first and second ends (24, 26, 30, 32) that form a gap (28, 34) therebetween; and wherein at least one of the upper and lower metal rings (6, 8) rests on or abuts the support sections (20, 22) in such a manner that the anti-rotation projection (36, 38) of the oil scraper ring spring engages in the gap (28, 34) between the first and second ends (24, 26, 30, 32) of the metal ring (6, 8) and thus effects an anti-rotation protection between the oil scraper ring spring and the metal ring (6, 8). a plurality of upper portions and a plurality of lower portions which are alternately arranged in a circumferential direction such that they are spaced in an axial direction; connecting portions each connecting the adjacent upper and lower portions (10, 12) to each other; wherein each of the upper and lower portions (10, 12) has a nose section which is arranged at the inner circumferential end and is designed to press a respective abutting upper or lower metal ring (6, 8) radially outwards, and has a support section (20, 22) which extends radially between the nose section and the outer circumferential end and is designed to have the respective upper or lower metal ring (6, 8) resting or abutting thereon; wherein an anti-rotation projection (36, 38) is provided on an upper and/or on a lower support section (20, 22), which extends upwards from the plane of the upper support section and, respectively, downwards from the plane of the lower support section and has a height which is less than or equal to the distance of the upper end of the nose section to the plane of the upper support section and, respectively, less than or equal to the distance of the lower end of the nose section to the plane of the lower support section, or less than or equal to the thickness of the metal ring (6, 8) to be placed on the upper support section and on the lower support section, respectively; and wherein the anti-rotation projection (36, 38) is designed as at least one material section which is bent outwardly from the upper and lower support sections (20, 22), respectively, and optionally is partially stamped or cut out from the same; an upper metal ring which rests on the the support sections of the upper portions of the oil scraper ring spring and the radial inner surface of which abuts the radial outer surfaces of the nose sections of the upper portions of the oil scraper ring spring; and a lower metal ring which rests on the support sections of the lower portions of the oil scraper ring spring and the radial inner surface of which abuts the radial outer surface of the nose sections of the lower portions of the oil scraper ring spring; wherein at least one of the upper and lower metal rings (6, 8) has respective first and second ends (24, 26, 30, 32) that form a gap (28, 34) therebetween; and wherein at least one of the upper and lower metal rings (6, 8) rests on or abuts the support sections (20, 22) in such a manner that the anti-rotation projection (36, 38) of the oil scraper ring spring engages in the gap (28, 34) between the first and second ends (24, 26, 30, 32) of the metal ring (6, 8) and thus effects an anti-rotation protection between the oil scraper ring spring and the metal ring (6, 8).