A toilet comprising: a toilet tank; an outlet (5-5'-5 ") placed in the bottom of the toilet tank; and a flush system further comprising: a flushing pushbutton comprising a vertical rod guided on a neck of a fixed housing of the flushing pushbutton; an overflow pipe; a wire made of steel that is guided in a flexible tube; the wire made of steel comprising a first end connected to a first mechanism and a second end connected to a second mechanism; and wherein the first mechanism is further connected with the vertical rod of the flushing pushbutton whereas the second mechanism is further connected with the overflow pipe; an intermediate coupling base (43-43'-43"); a bell comprising a top part and a bottom part (7") joined together; and wherein the intermediate coupling base (43-43') is arranged to be linked with the bell through a surrounding upper section of the intermediate coupling base (43-43') and further arranged to be linked with the outlet (5-5'-5 ") of the toilet tank; and wherein when the flushing pushbutton is pressed, the overflow pipe rises upwards, causing the flushing of the toilet tank through the outlet (5-5'-5"); characterized in that the top part of the bell comprises anchoring extensions alternating with intermediate gaps, wherein the anchoring extensions further comprise inner ribs; the bottom part (7") of the bell comprises tongues and recesses; and the intermediate coupling base (43-43') comprises latches alternating with recesses in the surrounding upper section of the intermediate coupling base (43-43'), wherein the latches further include external protrusions; wherein the tongues of the bottom part (7") are coupled with the intermediate gaps of the upper part and with the recesses in the upper section of the intermediate coupling base (43-43'); whereas the latches of the intermediate coupling base (43-43') are coupled with the recesses of the bottom part (7"); and and wherein the inner ribs of the anchoring extensions are snagged by the external protrusions of the latches of the intermediate coupling base (43-43'). a toilet tank; an outlet (5-5'-5 ") placed in the bottom of the toilet tank; and a flush system further comprising: a flushing pushbutton comprising a vertical rod guided on a neck of a fixed housing of the flushing pushbutton; an overflow pipe; a wire made of steel that is guided in a flexible tube; the wire made of steel comprising a first end connected to a first mechanism and a second end connected to a second mechanism; and wherein the first mechanism is further connected with the vertical rod of the flushing pushbutton whereas the second mechanism is further connected with the overflow pipe; an intermediate coupling base (43-43'-43"); a bell comprising a top part and a bottom part (7") joined together; a flushing pushbutton comprising a vertical rod guided on a neck of a fixed housing of the flushing pushbutton; an overflow pipe; a wire made of steel that is guided in a flexible tube; the wire made of steel comprising a first end connected to a first mechanism and a second end connected to a second mechanism; and wherein the first mechanism is further connected with the vertical rod of the flushing pushbutton whereas the second mechanism is further connected with the overflow pipe; an intermediate coupling base (43-43'-43"); a bell comprising a top part and a bottom part (7") joined together; and wherein the intermediate coupling base (43-43') is arranged to be linked with the bell through a surrounding upper section of the intermediate coupling base (43-43') and further arranged to be linked with the outlet (5-5'-5 ") of the toilet tank; and wherein when the flushing pushbutton is pressed, the overflow pipe rises upwards, causing the flushing of the toilet tank through the outlet (5-5'-5"); characterized in that the top part of the bell comprises anchoring extensions alternating with intermediate gaps, wherein the anchoring extensions further comprise inner ribs; the bottom part (7") of the bell comprises tongues and recesses; and the intermediate coupling base (43-43') comprises latches alternating with recesses in the surrounding upper section of the intermediate coupling base (43-43'), wherein the latches further include external protrusions; wherein the tongues of the bottom part (7") are coupled with the intermediate gaps of the upper part and with the recesses in the upper section of the intermediate coupling base (43-43'); whereas the latches of the intermediate coupling base (43-43') are coupled with the recesses of the bottom part (7"); and and wherein the inner ribs of the anchoring extensions are snagged by the external protrusions of the latches of the intermediate coupling base (43-43').