Metal cutting indexable drilling tool

A metal cutting indexable drill tool (100) comprising: an elongated drill body (101) having a boring shaft (102) and a mounting shank (103); a center bit blade (104) mounted in a blade seat (106) at a distal end (105) of the boring shaft (102), the blade seat (106) configured to hold the blade against a bottom of the blade seat (106); a drill flute (107) of the boring shaft (102) configured to guide from the center bit blade (104) and form cuttings, where the drill flute (107) includes a cuttings forming surface (108) at a distal end (109) of the drill flute (107); characterized in that the chip forming surface (108) is perpendicular to the bottom of the insert seat (106) for the center bit insert (104); and the chip-forming surface (108) is arranged at a distance X from a peripheral corner (110) of the center bit blade (104) to a point (301) on a curve (302) formed by an intersection of the chip-forming surface (108) and an imaginary inscribed sphere (302) wherein a center (303) of the imaginary inscribed sp