KASTEWILLLarge Bike Locks Heavy Duty Anti Theft.Secure Combination Bike U Lock with 16mm Shackle, 4ft Length Security Cable.U Bolt Bike Lock for E-Bike,Mountain Bike,Road Bike (Black Large)

I've had this for about a month now and it hasn't given issues yet. Perfect size for me to lock my rear wheel and frame when I make stops. Ill update later on in a few months.

tldr; The product works decently well given cost.You aren't looking at this bike lock if you are looking for the absolute best product that works the best for the given application. However, you are most likely looking for a U-Lock and were enticed by the cost of this product. So, I will spare the positives since it passes basic functionality and if you can live with the negatives then it is potentially a candidate for purchase. The coating of the U portion of the lock is rubbery and therefore could potentially lead to your skin catching on the lock if you are more person or do not ride with the most pristine form (or simply just position the lock poorly). The bar itself is obviously more sturdy than a chain lock, however if someone is determined to take your bike (given large enough lever, and not that large) its still very doable through the lock. The fitting of the attachment to mount the lock on the bike is a plastic and has a small range of diameters that it can actually work with – so check your bike for applicable locations before purchase. Further, the lock is held on with screws and nuts clamping the plastic through (ironically and hopefully) elastic deformation around the shaft and a rubber piece to add grip since it will deform easily allowing for a tighter connection. However, the entirety of this is held together by the two screws and nuts (as mentioned) and I see this as a critical point of failure given enough jostling or time wear to the point it breaks. Finally, the actual U part of the lock will not fit around a lot a poles due to the inner diameter being small (believe it is mentioned in product description, just noteworthy in purchase consideration since it may not fit your application). In all, thus far I would say the product is satisfactory and meets the basic needs of a U-Lock.

Durable, strong, and secure, but only if it were simple. There are three parts plus a key. It gets a bit complicated in a hurry. You keep the key in the small bar lock until you are ready to put it together and lock it. So, if not organized you could be juggling some items. Once you find a system, please let me know. I would suggest a longer cord, if possible. For now you can secure the front or back tire to a post and center of bike. If it were longer you could secure the whole thing. I only mention that because often you will see a secure bike with a tire missing. So a thief will be a thief in the end. When it is in all one piece you do feel better about your trip and the return home.

Semble tres solide, recouvert de caoutchouc donc parfait pour ne pas abimer la peinture du vélo. J'en suis tres satisfait.

wonderful price the u lock is alot better than i thought it would be and thicker, pictures dont do it justice and its very simple to use ONE YEAR REVIEW THE LOCK IS AWESOME STILL WORKING NO PROBLEMS FROM BEING OUT IN THE WEATHER ONE PEACE OF ADVICE TO THE COMPANY WHO MAKES THEM IT WOULD BE NICE TO SEE THE RUBBER SHEATHING REPLACED WITH A DIPPED IN RUBBER COATING SO IT WOULD GIVE MORE ROOM FOR THE LOCK CAUSE WITH THE RUBBER SHEATHING ON IT U CANT GET IT ON CERTAIN WHEELS SO I HAD TO CUT IT OFF OTHER THEN THAT THE LOCK IS AWESOME WOULD RECOMMEND TO ANYBODY LOOKING TO BUY ONE