A good and voralle secure lock. By ABUS typical bracket is tucked comfortably and safely. The dials can be easy to operate and engage a well. Some combination locks can be opened by special techniques without tools. Not here. Even repeated attempts to open the lock failed. Here you need heavy equipment. The Zahlenkobinantionseinheit any case save. A good lock to the wheel momentarily secure. If my bike a long time are at a "dangerous" place, then I would, however, get a stable padlock.