It makes a solid impression and the workmanship is good. The polymer coating is fixed into the end pieces so that no metal link in the chain comes to light and the bike frame is protected from scratches.
When trying to "feel" the castle by the combination to crack I'm gescheitet. With cheap locks not selbstvertändlich since you the snap of the correct numbers sometimes feel when you hold the shutter under tension.
Remains open only the brute force with brute force tool or via. That by trying all possible combinations, however, would take at 5-digit combination locks up to about 11 hours.
The castle is ideal to control the bike just quickly before the shop or company parking lot turn off during the day.
Overnight or unattended places you should not skimp and better access to two locks of different types, however!