I think the thing to bear in mind about this lock, is that it's more of a deterrent than offering serious security. It will stop people rolling your bike away, but isn't going to stop a determined thief. I'm sure that with a bit of effort an experienced bike thief could have this off in a few minutes. Having said this, this is a very cheap lock, fits in your pocket neatly, and will stop people rolling your bike off when you park it up in town during the daytime. I wouldn't feel safe leaving the motorcycle overnight or down a backstreet with this lock on, but in a bay in the middle of town, during the day, it provides a useful deterrent at pocket money price. Couple with a disc lock reminder to put potential thieves off even more.