This Monument Professional Power Plunger comes with 3 adaptors which should fit most shower bath basin and bidet wastes When Pumping the MON2161 unit in situ it will build up pressure which is then activated via the trigger to blast away the blockage When the trigger is pulled quickly the compressed air is discharged at once causing a shock wave through the water to dislodge the blockage within the waste even if it is past the trap down the pipework and around several bends