Keyless flexible cable locks up your bike easily and securely. Integrated 4 digit combination lock can be easily set to any of 10, 000 different combinations. Velcro(R) strap for bundling, coiling, and mounting anywhere on your bike or pack. Vinyl-coated cable is made of high carbon brass-plated steel wire, braided over steel aircraft cable.
Weaknesses: Extremely weak and easy to cut through
I purchased this lock a week ago to replace an older lock. My bike was stolen yesterday. I was away from my bike for less than 10 minutes - the thief cut through this lock in one clean cut it seems. The police told me this kind of lock is pretty worthless and can be cut through with the smallest wire cutters or even a pair of pliers. I am amazed at the poor quality and lack of strength of this lock, and really question REI for selling such poor quality equipment. It cost me a $1000+ bike. YOU ARE WARNED. STAY AWAY FROM THIS LOCK.