An abrasive grinding wheel (10) that comprises an annular body (20) made of abrasive material provided with a central hole (21) and a reducing ring (30) provided with a central attachment hole (32), wherein the reducing ring (30) is inserted into the central hole (21) so that the attachment hole (32) of the reducing ring (30) is coaxial with respect to the central hole (21) of the annular body (20), wherein the reducing ring (30) comprises two opposing enlarged axial end stretches (311 and 312) configured to axially lock the reducing ring (30) to the central hole (21) of the annular body (20).
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