through channel 30 causing the ambient air required to aerate the individual jets to be drawn into the interior of the housing since the individual jets produced by the perforated plate 23 produce a comparable reduced pressure the aeration openings 29 through which the ambient air can enter the interior of the housing are provided in the housing wall of the jet regulator housing 28 the end wall 19 which in this case has a hole structure simultaneously provides the jet regulator 22 with a flow straightener the function of which is to shape the individual jets aerated in the interior of the housing into a homogeneous and gently effervescent overall jet as will be clear from the figures the flow rate regulator 2 or the flow limiter 2 u2032 is integrated as a component part into the jet regulator housing 28 of the outlet inserts 1 5 8 11 14 and 50 it goes without saying that it is also possible instead of the jet aerator illustrated here for a laminar or unaerated jet regulator a flow straightener or some other jet shaping device to be arranged downstream of the flow rate regulator 2 or the flow limiter 2 u2032 the flow rate regulators 2 provided in the outlet inserts 1 5 11 14 and 50 have an annular throttling body 31 made of flexible material between itself and a regulating profile 32 provided on a circumferential wall the throttling body 31 delimits a control gap 33 since with increasing pressure the throttling body 31 is increasingly deformed and pressed into the regulating profile 32 the passage cross section of the control gap 33.