Secure your bicycle with the Bell Catalyst 600 Folding Bike Lock. The folding design reduces the amount of space needed for storage and transport. The included carry bracket can mount anywhere on your bike so you're never without a lock. The 6-bar design allows you to lock through the bike frame and rear or front wheel plus a sturdy object. An independent lab has rated the security of this lock a 3 on a 5-point scale.