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The ornamental design for a boring bit, as shown and described. |
FIG. 1 is a front view of a boring bit showing my new design;
FIG. 2 is a side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front view of a modification thereof;
FIG. 6 is a side view of the modification thereof;
FIG. 7 is a top view of the modification thereof; and
FIG. 8 is a bottom view of the modification thereof.
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