Un candado excelente. Viene con cinco llaves, incluida una con luz.

Strong!

Durable af, perfect size not too big nor too small. Can lock the body and wheel together almost anywhere. Also really high quality

El candado es de muy alta seguridad ahora bien, viene justo de engrase y más vale que lo aceites de vez en cuando porque después de unas lluvias puedes verte con una bici que no puedes desencadenar, y este no lo cortas con ninguna cizalla. Repetiré

C'est de lourd ! Quand on les dispose sur le guidon, ils ne passent pas inaperçus.La serrure semble ne jamais faillir, le plastique entourant le bloc serrure est fragile : il casse en cas de chute à hauteur de vélo sur sol dur ; le fonctionnement n'en est pas entravé, c'est juste moins esthétique.Sa bonne note délivrée par les organismes de test m'a convaincu de l'acheter.

Overall I'm very happy with it, especially for the dual bar lock system. I did extensive research on locks and came to the conclusion that this is the most secure for its security grade, and for the price point. Even more than other higher security grade well-known name ones. The only thing I don't like is the plastic shell on the lock itself, it feels and looks flimsy. But no problems so far. The lock system is very smooth and easy to use, I like how slim the key is, and love the auto-shut cover on the keyhole to protect it from water or dust. The carrying saddle for the lock is easy to use as well, however, would be better if not plastic. The U bar is wide enough to fit both my front wheel and the frame, even through one of the paddles onto any thick bar/bike lock, this method adds extra annoyance and could deter thieves ( recommanded by police). Bike thieves suck, good luck folks

I've had this lock since summer 2016 though to be fair I've got two bikes of different values so I use 4 different locks. Two including this lock and an Abus lock on my more expensive bike when I'm out, a different Onguard scooter lock with my more expensive bike in my shed and a fourth lock, MasterLock, for my cheaper station bike.This lock is clearly marked as Sold Secure Gold on the actual lock. The lock is smooth and well made. If the lock your receive doesn't fit both of these criteria then it is not an original. I should add none of the bike locks I have from different manufacturers feel rough from new.Like all the bike locks I have from Onguard, Abus and Masterlock it is is impossible to lock this lock up without using the key. One of the keys you receive in the bundle should have a light on it but to be honest I use one of my front bike lights when locking/unlocking it and the other lock I use if it is dark, so I can't tell you how useful it is.Unlike the other posters I've been lucky and not have had problems with the barrel getting stiff after months of use.This is probably due to the fact that the bike I use this lock on tends not to be left outside unattended for more than a few hours. Therefore I rightly cannot say what the durability of this lock is if left to the British elements for months.The main issues with the lock are:1. That while it is a large D-lock it only works on standard bike racks. If you are locking the bike properly - by which I mean through the frame and back wheel* - to a lamp post or non-standard bike rack the lock will not fit. In my case as I use a Abus cable lock as well so I can always lock both my wheels and frame up. (I do have a cable to lock my saddle but actually haven't used it.)2. The lock is heavy. I actually carry the lock in my rucksack and I can feel the weight difference with it in and out. Due to being female and the bike I use it on not having a horizontal cross bar, there is no way for me to fit it to the frame if I want a water bottle. I suppose I could bungee cord it to the pannier rack to carry it on my bike but I really can't be bothered. Either way I've not used the flimsy looking bits of plastic that come with the lock to attach it to the frame.I should add if you have quick release wheels and are locking it to a standard bike rack, then the lock is big enough for you to take the front wheel off, put it against the back wheel and lock both wheels plus the frame filling the entire lock. I don't tend to this as it is a hassle.Does this lock work? The only time someone has attempted to steal my bike I hadn't secured my front wheel with the Abus chain lock and so they undid my front wheel. Oddly they didn't steal it so either someone disturbed them, or they realise that nicking the wheel without the bike was pointless and this lock worked as a deterrent.In regards to bike thieves - if the thief is determined and your bike is worth it they will break through any lock and no one is going to argue with someone with an angle grinder. Anyway if you lock your bike properly and use two different types of lock to lock the frame and each wheel, whether you have quick release wheels or not, unless the thieves have plenty of time not to be seen so identified they won't steal your bike when locked. This doesn't mean they won't use other tactics to get the bike off you but that is an entire different matter and one reason why I have a station bike.*If you don't know how to lock your bike so it makes it harder for thieves to steal there are plenty of videos on YouTube from different UK police forces plus cycling organisations and individuals who work in the bike trade in the UK and North America. 80-90% of the bikes I see locked up are locked up poorly which actually helps you if you lock your bike up properly.

Very hefty, solid lock. It looks quite nice too. One small problem is that the thick base plate part is so chunky that if I mount it on the saddle, it gets in the way of my thigh when pedalling. I've had to move it down to the main frame of the bike, and there is pretty much only one option in terms of positioning where it won't rub against my legs, so the placement is not very customizable for my bike anyway.I haven't had any problems with the lock sticking as yet in the few months I've owned it. I sprayed a bit of silicone oil into the lock when I first received it. The size is perfect for going through the frame and wheel of the bike and around a signpost. Not much wiggle room left after that. The smaller version would have been too small, and the longer version should be good for 2 bikes or for locking your bike to a lamppost. I pair this with a kryptonite 7' cable to secure my front wheel and saddle as well. The 4' cable would have been far too short for this.One other thing that annoys me is the quick release. The part of it which clamps onto the U lock and allows you to attach it to your bike always works loose so when I try to just snap it in place, the attachment just slips and rotates and doesn't lock in place. I have to hold the latch open and slot the attachment into place which is a bit of a hassle and could have been avoided with better design. I'll probably just epoxy the attachment to the U lock at some point to avoid this.

The lock functions as you would expect any good U lock to. but there are a couple things that make this one a little unique. First is the on-bike clip is comes with, most u-locks use a slide into place clip, this one used a sort of side clip that I find vastly superior the the other type, this makes it so that you can mount the lock in places where a traditional style clip may not allow you to remove the lock. Another thing I like is the self closing keyhole, many locks have a plastic cover you can turn to cover the keyhole of the lock when not in use, but this model has a little spring loaded door that you push the key through and that closes when you pull the key out, it's nice for keeping moisture and debris out of the lock mechanism. The lock is also well padded, making sure that although rugged and heavy, it isn't going to ding up your bike. The only real cons I have with it are the awkward and bulky style of the actual lock part of the the design, although rarely, its needlessly odd shape and overly large size made it difficult and even impossible to fit in a few places, making the lock pointless, and the other is the BS guarantee that is offered. U-bar locks aren't invincible, and with the right tools (a cordless angle grinder) and a little privacy they can be cut through in less than a minute. Knowing this the makers have written their guarantee to be void if the lock is cut with a power tool, which makes it worthless, so if you were looking at this lock because of its guarantee don't bother.All in all it's a great lock and I'd recommend it to anyone looking for a U-bar lock.Pros+ on-bike clip is superior to other locks+ self- covering keyhole+ well padded+ overall sturdy look and feelingCons- Overly bulky and odd shaped Lock- 100% BS protection guaranteeLock would be an easy 4 star if they didn't try to trick me with a guarantee that is worded to be worthless.

I have had my bike stolen and I knew that it could help again in my college town since there are plenty of reports of bike thefts so I decided to get a sturdy U-lock that could keep my road bike from getting snatched again. I did some research and found that this lock was very capable of keeping thieves from cutting it since it is thick.I have had no problem with this lock! I would get a U-lock instead of a cable lock any day!The good thing about this lock is it comes with a holder so you can attach it to your bike when you are riding instead of carrying it in your bag and if you lose your key, they provide about 5 extra keys! The nicest key has a LED light which is pretty handy for those late night rides.

Locks are simple tools that need to do a few things perfectly. So far this lock has prevented my bike from being stolen, so that's a nod to its credibility. What's important to me is that the shackle opens and shuts reliably. In this case the OnGuard is flawless. I open and close my lock 10 times a day as I'm running errands, arriving at work etc. I've had other locks that were a pain to open & close. This lock has a solid tumbler & shackle that operate cleanly. And when it gums up I just squirt some WD40 (as suggested by the owners manual). Moreover, each lock includes 5 spare keys and a tag to allow you order replacements. You can tell these guys know their stuff.

Ordered this because it looked tougher than the other U-locks that can be had for $10-40. It might take a minute or two with an angle grinder (not verified) but it'll deter thieves with hacksaws and bolt cutters. Comes with a mounting clip that is screw on, not flimsy like the others that have a pull-tight mount. Comes with 5 keys (1 big, 4 small) which is nice but unnecessary for my use. I use this to lock my bike in the back of my truck (with a cable) and on campus. Easier to use than those circle-wound cable locks, and quite a bit more secure. On campus, this fits through the rear of the frame and rear wheel, securing all but the front wheel of my bike. This won't fit around your seat tube and rear wheel, you'll need something bigger for that. Great value for the price, I'd recommend this lock to any bike owner.