Bike Combination Locks
A thief with the right tools can defeat any bike lock in five minutes, but that doesn’t mean all locks are created equal. Most stolen bikes are locked by cables or a hardware store chain that’s easily cut with 12-inch bolt cutters. Because they’re the quickest to cut, they’re best for low-theft areas and keeping someone from walking off with an otherwise unlocked bike. If you're going to be away from your bike longer then 15-30 minutes check out a u-lock or chain lock.