Property me this accessory kit to my Ergorapido bought Plus Lithium OPI and I was very pleased, because these are precisely the nozzles that I need 2 males. Unfortunately, I then realized sadly that the adapter does not fit perfectly on my machine. Though it can be stuck together, but does not keep sliding forward so that a gap of a few millimeters is created, so it does not really bear the other essays and suction power is lost. - After I was not quite sure if I did not maybe ordered nonsense, I once called and inquired quickly at AEG. There I was told that there were at the very beginning of the 10 AKIT production 1-3 production batches that had a manufacturing defect and were largely brought back. My description sounds like exactly the problem and it is possible that somewhere still old stocks left over. I have the Amazon informed customer service, has been recalled immediately and have again explained everything. Now there stocks are checked and possibly defective parts are sorted out. In about 2-3 weeks, the part should be ordered again and then adjust. The parts themselves are good and look very practical and are what I had imagined. Fine accessories, especially if you have pets.