The ornamental design for a barholder for towel or paper roll, as shown and described.
FIG. 1 is a front perspective view of a bar holder for towel or paper roll showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
The broken away symbols in the drawings indicate that any portion of the article beyond what is shown forms no part of the claimed design. The broken line showing of the interior portion of the bar holder for a towel or paper roll is for environmental purposes only and forms no part of the claimed design.