The ornamental design for a jackstand mount, as shown and described.
FIG. 1 is a perspective view of a jack stand mount showing, my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof:
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a view showing jack stands mounted to the jack stand mount.
The broken line portions of the jack stand mount in FIGS. 1-8 represent unclaimed portions of the claimed design and form no part thereof. The broken line portions of the jack stands in FIG. 8 represent unclaimed portions of the claimed design and form no part thereof. The dot-dash broken lines in FIGS. 1-6 and 8 represent unclaimed boundary lines and form no part of the claimed design.