These are now already our second Skates of K2 since we are very satisfied with the first.
A skid protection is also doing with.
For those interested, the shoes are "made in China".
My recommendation to buy have these things.
If still gives something I will change this entry accordingly.
Update: no problems so far, grinding of the (new) skates lt a service representative.
the rink not necessary. From a "ride on eggs" my wife noticed nothing.