A connecting joint (170) between handlebars (155) and a frame (105) of an agricultural tool (100), wherein the joint (170) comprises two metal sheets (175, 185) attachable respectively to the handlebars (155) and the frame (105) of the agricultural tool； wherein each metal sheet (175, 185) comprises at least a flat portion (176, 186) intended to be placed parallel to and in contact with the flat portion of the other metal sheet； wherein the metal sheets (175, 185) can rotate relative to one another about an axis of rotation (Z) perpendicular to the flat portions (176, 186)； and wherein the flat portion (176) of a first metal sheet (175) exhibits a plurality of localized indentations (181) arranged along at least an arc of circumference centred on the axis of rotation (Z), and the flat portion (186) of the second metal sheet (185) comprises at least a localized indentation (191) able to selectively engage with one of the localized indentations (181) of the first metal sheet (175), on the basis of a different relative position of the first and second metal sheets (175, 185) with respect to the axis of rotation (Z).
