Cutting Tool Insert

FIG. 1 is a front view of a cutting tool insert in accordance with the present design; FIG. 2 is a rear view thereof; FIG. 3 is a right side view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a top view thereof; FIG. 6 is a bottom view thereof; FIG. 7 is a first perspective view thereof; FIG. 8 is a second perspective view thereof; and, FIG. 9 is a cross sectional view taken along line 9 - 9 of FIG. 1 . The broken lines in the drawings depict portions of the cutting tool insert that form no part of the claimed design.