Abstract: A lock includes a case, an actuating device for retracting a latch bolt, and a first and second pivotal assembly selectively coupled to a mounting wall of the case. The first pivotal assembly includes a first pivotal seat for coupling with a rotational outer handle and a second pivotal seat for coupling with an inner handle. The second pivotal assembly includes a third pivotal seat for coupling with an inner handle. One of the first pivotal assembly and the second pivotal assembly is selected for use with one of the rotational outer handle and a thumb-piece type outer handle. A rotational pressing member is selectively and rotatably mounted to the mounting wall when the lock is used with the thumb-piece type outer handle. The rotational pressing member is actuated to turn the actuating device for retracting the latch bolt when the thumb-piece type outer handle is pressed.

Abstract: A lock includes a case, an actuating device for retracting a latch bolt, and a first and second pivotal assembly selectively coupled to a mounting wall of the case. The first pivotal assembly includes a first pivotal seat for coupling with a rotational outer handle and a second pivotal seat for coupling with an inner handle. The second pivotal assembly includes a third pivotal seat for coupling with an inner handle. One of the first pivotal assembly and the second pivotal assembly is selected for use with one of the rotational outer handle and a thumb-piece type outer handle. A rotational pressing member is selectively and rotatably mounted to the mounting wall when the lock is used with the thumb-piece type outer handle. The rotational pressing member is actuated to turn the actuating device for retracting the latch bolt when the thumb-piece type outer handle is pressed.