I've had this lock for my new expensive bike for 3 months, and it was horrible from the start. I would go to unlock my bike, and on some occasions would leave it locked on the rack and walk (I live on a college campus) because it would be faster than spending more time trying to unlock it. There were some days that it would take me 10 minutes to lock or unlock. Every time it rained the metal inside would seem to rust and the new ware caused it to become even harder to use. Finally, today I went to lock up my bike, and the key just broke off in the lock. There is absolutely no way to get it out so my spare key was useless. Now I have an expensive bike on a rack outside at night because it happened after most stores closed, so I need to get a new lock hoping it my bike doesn't get stolen tonight, because the key broke in it before it locked. Horrible investment. Do not recommend getting this.