After 10 rollerblade, I put on my "wheel". After different testing and advice and also promo, I started to K2. The mounting system is very nice, fast, efficient. For cons, I do not use the brake, but by removing no wheel axle adapted to the new width. I had to do crafts on new equipment, it's not terrible. Note that the package was opened, damaged. Otherwise comfort ok, ok ventilation; good skates
