The ornamental design for an overmolded implement handle grip, as shown and described.
FIG. 1 is a perspective view of the overmolded implement handle grip of the instant invention;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a front end view thereof;
FIG. 7 is a rear end view thereof; and,
FIG. 8 is a perspective view illustrating the overmolded implement handle grip in combination with a snow shovel implement.
The portions of the figures illustrated in broken lines depict portions of the overmolded implement handle grip that are not part of the claimed subject matter.