The roller ski wheels are fastened with bolts that you can loosen.
You may find that the roller ski wheels gradually wear out as you use them. It is mainly the braking that wears on the wheels.
You change the wheels by loosening the bolt that holds the wheel together with the roller ski. Put on a new wheel and fasten the bolt again. Remember to tighten properly - and preferably tighten after a couple of trips. You will find roller ski wheels on our website.