Abstract: A pincer tool (10) for tightening a band clamp. The pincer tool (10) includes a pincer head (12) including a base element (14), two jaw elements (16a, 16b) pivotably attached to the base element (14), wherein the jaw elements (16a, 16b) each include a jaw end (20a, 20b) and a rear end (22a, 22b) on opposite sides of the pivot point, and a wedge element (26) mounted on the base element (14) to be movable in a longitudinal direction (D) by pressure of a pressurizing agent, wherein the wedge element (26) is configured to separate the rear ends (22a, 22b) of the jaw elements (16a, 16b) when being pressed in the longitudinal direction (D) so as to move each of the jaw ends (20a, 20b) by a stroke.