The ornamental design for a cuttingtool handle, as shown and described.
FIG. 1 is a perspective view of our new design.
FIG. 2 is a left side view thereof.
FIG. 3 is a right side view thereof.
FIG. 4 is a top view thereof.
FIG. 5 is a bottom view thereof.
FIG. 6 is a front view thereof; and,
FIG. 7 is a rear view thereof.
The unevenly-spaced broken lines illustrate the bounds of the claim and form no part thereof. The evenly-spaced broken lines illustrate portions of the cutting tool which form no part of the claimed design.