A suspension apparatus, consisting of a plug-in sleeve ( 1, 1'), being held in a through hole ( 502, 515; 522) of a supporting structure, and a supporting arm which can be inserted into said plug-in sleeve and can be used as a direct, primary merchandise holder or to support a secondary merchandise holder ( 3, 4), wherein a) the plug-in sleeve ( 1, 1') comprises: aa) a sleeve piece with a front inlet into a channel; ab) at least one first locking contour bordering the channel; and ac) a flange extending from the sleeve piece; b) the supporting arm comprises: ba) a plug-in section for inserting into the channel, which ends at a plug-in end and which has at least one first mating contour that interacts with the first locking contour when the supporting arm is in the inserted end position; and bb) a front end located opposite the plug-in section being designed to extend into the free space, wherein c) the first locking contour is an elevation protruding from above into the channel and being situated at a distance from the inlet into the channel; d) the first mating contour on the plug-in section is a main hole being situated on the top side with an offset ( b) in relation to the plug-in end; and e) the channel has an expansion behind the inlet thereof in the lower region and/or the lower region of the plug-in section in the extension thereof is reduced in the downwards cross-section such that the plug-in section of the supporting arm being plugged into the channel in a raised inclined position has free space in this deflection prior to reaching the locked end position thereof, characterised in that f) the supporting arm is round, oval, rectangular or square in cross-section and consists of tubular material. a) the plug-in sleeve ( 1, 1') comprises: aa) a sleeve piece with a front inlet into a channel; ab) at least one first locking contour bordering the channel; and ac) a flange extending from the sleeve piece; aa) a sleeve piece with a front inlet into a channel; ab) at least one first locking contour bordering the channel; and ac) a flange extending from the sleeve piece; b) the supporting arm comprises: ba) a plug-in section for inserting into the channel, which ends at a plug-in end and which has at least one first mating contour that interacts with the first locking contour when the supporting arm is in the inserted end position; and bb) a front end located opposite the plug-in section being designed to extend into the free space, wherein ba) a plug-in section for inserting into the channel, which ends at a plug-in end and which has at least one first mating contour that interacts with the first locking contour when the supporting arm is in the inserted end position; and bb) a front end located opposite the plug-in section being designed to extend into the free space, wherein c) the first locking contour is an elevation protruding from above into the channel and being situated at a distance from the inlet into the channel; d) the first mating contour on the plug-in section is a main hole being situated on the top side with an offset ( b) in relation to the plug-in end; and e) the channel has an expansion behind the inlet thereof in the lower region and/or the lower region of the plug-in section in the extension thereof is reduced in the downwards cross-section such that the plug-in section of the supporting arm being plugged into the channel in a raised inclined position has free space in this deflection prior to reaching the locked end position thereof, characterised in that f) the supporting arm is round, oval, rectangular or square in cross-section and consists of tubular material.