0ur opinion:

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Utilizing 0nGuard's new ultra steel shackle, M-Cylinder technology and Dual Steel Bar lock mechanism that delivers up to 10 tons of pull strength. 0n top of all these great featurs 0nGuard also includes 4 laser cut keys and 1 light key for night time use. 13mm hardened ultra steel shackle. Double bolt locking mechanism. Vinyl coated and weatherproof. Size: 4.5' x 9'. Weight: 2.07 lbs.


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Some more accessories for this product for you:

• Master Lock Force 3 Standard Bike Lock - 4003005
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• OnGuard PitBull DT 5005 Bicycle U-Lock and Extra Security Cable
• OnGuard Bulldog STD 5010 Bicycle U-Lock

Piece Availability: Usually ships in 24 hours

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Buyer's feedback: - * used for three months before the lock mechanism jammed, key wouldn't turn anymore... ...
The lock worked fine for about three months, but one day as I attempted to lock up my bike before a class I found the key wouldn't turn. I reinserted the key several times, but it wouldn't turn, not halfway, not even a quarter of the way. I had an extra cable lock with me, and figured I could fix the lock when I got home. I tried oiling it, and reinserting each of my five keys several different ways, but the lock wouldn't budge. I contacted the company, and was told that I could get a replacement lock by sending in my key tag along with the five keys that accompanied the lock. I sent these in, along with a printed copy of the email I got from the company representative, about three weeks ago. I still haven't heard anything. I'm shopping around for a new lock now, as I'm tired of only relying on my cable locks. I think I will buy a Kryptonite u-lock...

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Buyer's feedback: - Awesome durability, even through foul weather.
After reading a blog entry reviewing several bike locks, I was convinced that this OnGuard Bulldog u-lock was the one for me during my college days in the Midwest. Through several seasons now, the lock has proved its durability and the extra keys have been really handy. (Just don't rely on that keylight!) My only concern would be about the lock's performance in freezing wet weather. A few times, water snuck into the locking mechanism and froze into an annoying problem. Granted, I didn't keep my bike in covered storage, and the ice wasn't anything my grip and twisting strength couldn't overcome with a minute of diligence. I like this lock and I think it got the job done well.

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Buyer's feedback: - * Decent Lock ...
As they say , "You get what you pay for". At $25 this is a decent lock that I would use to secure an inexpensive bike. But wouldn't feel confident that this puppy could protect a quality bike from well-healed criminals.

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Buyer's feedback: - Nice Lock, But Key has jammed
It's a nice lock. I bought it to replace my Krypto, after the viral video of how to hack the Kryptos. It worked good for about 2 years and has been a solid U lock -- but now the key will only turn half way - jams in the middle. I have oiled it and cleaned it - cant fix it.

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Buyer's feedback: - * Good, except for the mounting bracket ...
The lock seems fine and functions well, but the mounting bracket isn't working right. It has a yellow latch that you slide a groove on the lock into to mount it to the bracket, and it is supposed to keep the lock from sliding out again. The yellow latch also has a thumb piece that you can push on to release the lock. But I can pull the lock straight out without even pushing the thumb piece, this would probably be a major pain if you're riding over bumpy roads and the lock decides to slide out and onto the ground.