Milling tool as well as set of milling inserts of a milling tool

A milling tool for slot milling, comprising:

• a tool body defining a rotation axis;
• and
• a plurality of first seats separated in a circumferential direction and forming a plurality of root insert seats, the plurality of root insert seats being arranged one after the other in the tool body along a first line that extends around the rotation axis;
• a plurality of flank insert seats separated in the circumferential direction, the flank insert seats comprising a plurality of second seats arranged one after the other along a second line that extends around the rotation axis on a primary side of the root insert seats, and a plurality of third seats arranged one after the other along a third line that extends around the rotation axis on a secondary side of the root insert seats, each of said plurality of flank insert seats including a bottom surface, an inner side surface, and an outer side surface, wherein each of the plurality of root insert seats comprises a replaceable root insert and each of the plurality of flank insert seats comprises a replaceable flank insert each root insert including an under side, an opposite upper side forming a rake face, a circumferential edge side connecting the upper side and the underside, and at least one primary main cutting edge and a secondary main cutting edge, which converge toward each other and are formed where the edge side meets the upper side, each flank insert including an under side, an opposite upper side, and a circumferential edge side connecting the upper side and the underside, and each flank insert defining a centre axis that extends through the upper side and underside of the flank insert, wherein the edge side of the flank insert forms a rake face.