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The ornamental design for an extension handle for wrenches, as shown and described. |
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FIG. 1 is a left side elevational view of an extension handle for wrenches showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is an enlarged top plan view of the handle portion thereof;
FIG. 8 is an enlarged side elevational view of the handle portion thereof; and,
FIG. 9 is a perspective view thereof.
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