Tip to get to the wear part (Kunstoffwelle) permanently

about the quality of the nozzle can not complain to; yes if it was not would the plastic shaft to the wheels. The wheels are in fact significantly high / harder than the shaft on which they alufen. So the wheels are working a the passage of time in the wave until the wave breaks. Before the wheels tilt mostly on the shaft and leave unsightly scratches on laminate and Co.
Here is a solution from me I've done already with two of the nozzles.
Take an aluminum, steel or stainless steel shaft with 4 mm diameter. Soon on this ca.22mm. Then you raushebeln wheels and replace the plastic shaft therethrough. Keeps me for years and I suck every day the apartment once.

Because of course, not everyone has a home right wave, you take the hardware store long M4 headless screws. On the upper part of the thread is mostly not cut. Because simply cut off, you've got his 4mm shaft.

PS Do you like the recession? So I would be happy with a click on "Helpful Review".