A cremone bolt handle envisages control parts (7) consisting of an actuator bar (13) projecting from an opening (12) in a base element (11) and attached to a corresponding rack defining an element (10) for supporting, connecting and driving the bar. The bar (13) has a pawl (14), attached at one end and rocking, thanks to means (15), in a direction perpendicular with the plane of the bar (13) in such a way as to assume a locking position following a connection inside a seat (16) in the base element (11) and when the door or window is in an open configuration, that is to say, with a first part (3) of the door or window distanced from the second part (8) and, respectively, a bar (13) release position, when the door or window is in a closed configuration, that is to say, with the first part (3) moved towards the second part (8). IMAGE
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