Editorial Product Review:Item Description:Utilizing OnGuard's new ultra steel shackle, M-Cylinder technology and Dual Steel Bar lock mechanism that delivers up to 10 tons of pull strength. On top of all these great featurs OnGuard 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: 3.5' x 5.5' Weight: 1.7lbs.
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Buyer Reviews
Average Buyer Rating:

Customer Rating: 
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Great Commuter Lock
Several aspects of the Bulldog MINI U-Lock make it a very good choice for the commuter in areas where moderate security is adequate. First, the lock is compact, easy to transport in most types of bike-mounted bags or packs, or on the frame mount (not used by this reviewer). The compact size is just right for a single point connection of a frame component to a heavy duty 'U' rack or a parking meter. It won't fit around the trunks of even small street trees - this is not usually a problem, since street signs and other urban elements offer plenty of casual anchorage points in most areas when bike racks are missing or full. Second, the lock is light-weight by U-lock standards, so it won't feel like a ship's anchor in your bike bag or on the mount. Third, the plastic finish coat and end caps are easy on your bike. And fourth, the five keys including a lighted key that are provided with the lock offer more lost or spare key convenience than is probably warranted.
In all, a solid, economical choice.
Customer Rating: 
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Photo is of older version (OnGuard recommends newer version)
The newer Bulldog MINI is distinguished by TWO yellow end caps and a different mounting bracket using a metal piece on the U-lock. Apart from the bracket, OnGuard claims the difference is mostly cosmetic, but OnGuard also indicates that the anti-theft insurance and guarantee terms differ between these versions. Moreover, OnGuard flatly states that the newer version of the Bulldog MINI is the one that should be purchased if this model is desired. If/when this seller distributes the new version, the photo should be changed. Note that the new Bulldog MINI list price is $35 list price, and that is the price for which it is sold at local recreational equipment stores. So paying that much (w/ shipping) for an older version might not be the best deal.
Customer Rating: 
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The lock profile stuck easily
It's been only two weeks, the lock became stuck and I can't unlock it. This is the first time I buy a product from the brand, I'm really upset.
The warranty department sent me a new one after one call. Thanks to that. I wish that it won't stuck easily like the last one.
Customer Rating:
- Easy to use and fits everywhere
After removing the ugly yellow plastic pieces, this lock was perfect. It's small enough to fit into your back pocket (depending on your jeans) and big enough to lock to most bike racks. I like that the key stays in and won't fall out until it's locked.