Master Lock 8122D Combination Cable Lock, 6-Foot x 1/2-Inch

The Master Lock Quantum Series Cable Locks are perfect for use with bicycles but can also be used to secure residential gates, fences, grills, lawnmowers, tools & ladders.

 (10 customer reviews)

This lock stopped working correctly after only three days of use :( I used a lock by this same manufacturer for about 15 years without incident, but when I bought this one it failed to work properly after only three days... They just don't make 'em like them used to.

This product did its job as described for a period of one year. After that the entire combination lock assembly fell apart into about 10 different pieces. It was then I learned that most of the assembly was made of plastic! This should have lasted longer. Save yourself the trouble and expense: go to the hardware store, buy a padlock and chain, and be done with it. It will probably cost the same as this thing, but will last for 10 years without falling apart.

This cable was cut and my brand new bike stolen from in front of my house less than a week after buying it. Note that SOME Master Lock bicycle lock products offer an anti-theft guarantee...but NOT their cable locks! That should tell you something about what they themselves think about this product of theirs. See the locks that Master Lock recommends (and their anti-theft guarantee) here:
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Lesson learned: don't cheap out on a bicycle lock, especially if you have a nice bike. Junkies WILL steal it because cable locks are so easy to cut, and expensive bikes are easy to sell for a quick $20 or $40 in cash. I would give this lock zero stars if I could!! Needless to say, when I replace my bike, I will not be buying this bike lock again, but will likely buy one that offers an anti-theft guarantee.