This film was made to expose how utterly horrible are these two companies at testing chains. In the video you will be able to see what a protected motorbike stands against being stolen with:

- ABUS GRANITE CITY BLACK X-PLUS: The manufacturer guarantees 5 minutes: Broken in 17 seconds.
- ABUS GRANITE: The manufacturer guarantees 5 minutes of resistance: Broken in 25 seconds.
A picture Worth More Than 1000 words:

http://www.youtube.com/watch?v=VC3hFr8p2ck

Why you never must buy a lock with circular lock?

http://www.youtube.com/watch?v=g0Zw4JI4cxs