Wrench

A wrench including:

• a main body;
• a driving head connected to the main body and swingable about a pivot axis;
• and
• a control mechanism including a control member and a positioning assembly, the control member being disposed on the main body and movable between a locking position and a release position, the positioning assembly including a locking member and a positioning unit which are movable relative to each other, one of the locking member and the control member including the positioning unit, and the other of the locking member and the control member including a first positioning portion and a second positioning portion which have different depths;
• wherein when the control member is located in the locking position, the positioning unit engages in the first positioning portion to orient the locking member toward the driving head to restrict rotation of the driving head, and when the control member is located in the release position, the positioning unit engages in the second positioning portion to allow the locking member to move away from the driving head such that the driving head is rotatable;
• wherein the positioning unit is configured to engage in the first positioning portion or in the second positioning portion in a first direction, the control member includes a first stepped portion and a second stepped portion, in the first direction a depth of the first stepped portion is smaller than a depth of the second stepped portion, when the control member is located in the locking position, the locking member abuts against the first stepped portion in the first direction, when the control member is located in the release position, the locking member corresponds to the second stepped portion and is normally spaced from the second stepped portion, and the first direction is perpendicular to the pivot axis.