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  • The 6 ft. long, 12mm thick cable is made of heavy-duty, braided steel to offer good cut resistance and is self-coiling for convenience; vinyl coating helps protect finishes
  • Integrated, resettable 4-digit combination lock has 10,000 possible variations; lock is permanently forged to the cable for added security
  • Includes a versatile mounting bracket and hook-and-loop retention strap for hassle-free transportation
  • OnGuard rates the Doberman Combination cable lock as a 40 out of 100 on their 100-point security rating system, where higher-rated locks offer increased security


View all OnGuard Cable Locks

REI membership


Best Use Bike Commuting, Recreational Cycling
Lock Style Cable Lock
Lock Type Combination Lock
Lock Thickness (mm) 12 millimeters
Material(s) Steel cable/vinyl cover
Dimensions 6 ft. x 0.47 in. (12mm)
Mounting Frame
Weight 1 lb. 4 oz.
Rated 1 out of 5 by from Well half the product worked I used this product in the manner described on the package itself. The product comes with a clamp designed to carry the lock when not in use. It gives several suggestions on where to place in this case my bicycle. I tightened the two screws around the seat post where it made its new home. Fast forward: I am commuting to work (bike lock is an essential) and I hit a bump in the road the clamp cleanly breaks in half and falls off unbeknownst to me. I get to work no way to lock my bike up. After work I retrace my route no able to find the lock just the clamp. I talked with REI and they refused to return it because I didn't have the lock. If I had the lock I wouldn't need to return it. I do not recommend this to any friend/enemy.
Date published: 2012-08-21
Rated 2 out of 5 by from No Match for Chain Cutters This lock is easy to use, lightweight and flexible. Unfortunately, chain cutters cut through it like butter. One bike down...
Date published: 2013-09-01
Rated 3 out of 5 by from The locking part works well. However The lock works very well. I have had two of the small plastic "T"'s that hold this to my bike frame break. This is a real weak area and you should also hold it on with a small bungie. I lost one on a ride but some nice person put it on a post so the next time I rode this route I saw it and got it back. However, even REI could not help me get a new holder so it would attach to the bike frame again.
Date published: 2013-02-14
Rated 1 out of 5 by from cut like butter literally the first time I used this new lock, my new cannondale was stollen. I had been living in a low bike crime area, now moved to a high bike crime area so i know I should have used a bike lock but still.
Date published: 2015-07-17
Rated 4 out of 5 by from Works smoothly, mounts securely The mounting kit was easy to put on, and the twist on and off mounting is clever. There is a tab that must be pressed to remove. The cable wraps up neatly and has a velcro strap to hold it coiled. I'm happy with it for locking in a public place for a short time or in our apartment garage.
Date published: 2013-04-15
Rated 1 out of 5 by from Gone in 60s / Not suitable for bikes Cons: Doesn't protect your bike: Used this without a U-lock for two hours at a busy Metro station. My 5 year-old Kona was gone when I came back. Pros: Large, easy to see numbers; easy to reset, no scratch casing; but none of that really matters.
Date published: 2015-10-23
Rated 5 out of 5 by from So far, so good. Seems like a good low-security lock. You of course should only be using U-locks, but for a quick lock up to help keep honest people honest, this is a good one. I have had two Krypto coil locks that have both broken over time, so hopefully this one lasts a while longer!
Date published: 2014-09-25
Rated 5 out of 5 by from Solid lock! Lightweight for its size I got this for my city bike where I need a good lock. It's a nice long cable and pretty light for its size. Easy to reset combination. I recommend this for anyone. Mounts nicely to the seat post too!
Date published: 2016-09-29
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How do I reset a used Doberman#8030 coiled cable lock when I have the old code?

Asked by: Judy
​You can reset the combination by entering the old code and opening the lock. Once open, you will find a reset collar on the inside of the side with the number dials. Turn the collar clockwise until it stops. Once the collar is turned you can set the combination to a new setting of your choice. Once you have a new combination, turn the reset collar back in a counter clockwise direction until it stops. Your lock combination is now reset.
Answered by: REIservice
Date published: 2017-03-29

forgot the combination. how can I open the lock?

Asked by: doug-wa
We recommend contacting the vendor. They are best able to answer your question.
Answered by: REIservice
Date published: 2016-04-29
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