FIG. 1 is a perspective view of the front, top and right side of a slider for slider fastener showing my (our) new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom view thereof; and,
FIG. 6 is a right side view thereof, the left side view being mirror image thereof.
The ornamental design for a slider for slider fastener, as shown and described.