A rotary cutting tool, having a longitudinal axis, around which the rotary cutting tool is rotatable in a direction of rotation, the rotary cutting tool comprising: a forward portion forming a cutting portion and a rearward portion forming a shank portion, the cutting portion comprising: a peripheral surface having a plurality of flutes recessed therein, the plurality of flutes extending helically along the longitudinal axis, and forming a plurality of cutting teeth, each cutting tooth formed between two adjacent flutes and comprising: a cutting edge at a rotationally leading edge thereof; and a chip-splitting arrangement comprising: exactly two grooves including a first and a second groove (42, 44), the first groove being axially forward of the second groove, characterised in that the two grooves interrupt the cutting edge and diverge, relative to each other, therefrom in the peripheral surface on opposite sides of an associated plane that is oriented perpendicularly to the longitudinal axis. a forward portion forming a cutting portion and a rearward portion forming a shank portion, the cutting portion comprising: a peripheral surface having a plurality of flutes recessed therein, the plurality of flutes extending helically along the longitudinal axis, and forming a plurality of cutting teeth, each cutting tooth formed between two adjacent flutes and comprising: a cutting edge at a rotationally leading edge thereof; and a chip-splitting arrangement comprising: exactly two grooves including a first and a second groove (42, 44), the first groove being axially forward of the second groove, characterised in that the two grooves interrupt the cutting edge and diverge, relative to each other, therefrom in the peripheral surface on opposite sides of an associated plane that is oriented perpendicularly to the longitudinal axis. a peripheral surface having a plurality of flutes recessed therein, the plurality of flutes extending helically along the longitudinal axis, and forming a plurality of cutting teeth, each cutting tooth formed between two adjacent flutes and comprising: a cutting edge at a rotationally leading edge thereof; and a chip-splitting arrangement comprising: exactly two grooves including a first and a second groove (42, 44), the first groove being axially forward of the second groove, characterised in that the two grooves interrupt the cutting edge and diverge, relative to each other, therefrom in the peripheral surface on opposite sides of an associated plane that is oriented perpendicularly to the longitudinal axis. a cutting edge at a rotationally leading edge thereof; and a chip-splitting arrangement comprising: exactly two grooves including a first and a second groove (42, 44), the first groove being axially forward of the second groove, characterised in that the two grooves interrupt the cutting edge and diverge, exactly two grooves including a first and a second groove (42, 44), the first groove being axially forward of the second groove, characterised in that the two grooves interrupt the cutting edge and diverge, relative to each other, therefrom in the peripheral surface on opposite sides of an associated plane that is oriented perpendicularly to the longitudinal axis.