The ornamental design for an adjustablewreckingbar, as shown and described.
FIG. 1 is a side perspective view of an adjustable wrecking bar showing our new design;
FIG. 2 is a top view thereof, showing our design in a retracted position;
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 view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a top view thereof showing our design in an extended position;
FIG. 9 is a bottom view thereof;
FIG. 10 is a left-side view thereof; and,
FIG. 11 is a right-side view thereof.
The dashed line showing of structural lines is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.