The ornamental design for a pair of handles for utensil, as shown and described.
FIG. 1 is a front view of the pair of handles for utensil of my design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a front perspective view thereof; and,
FIG. 7 is a front perspective view of the pair of handles of FIG. 1 in an environment showing a garlic press;
Portions of the structures shown in FIG. 7 with broken lines represent an environment in which the claimed design may be used and does not form part of the claimed design.