Bike Lock Bicycle Lock Chain ，5-Digit Combination Lock Core Steel Wire Bike Lock Security&Portable Bicycle Locks,1.1m x 1/2 inch (Black)

Very durable bike lock. Nice mounting bracket that serves as a quick on and off storage system. The large numbers on the dial are easy to rotate and see. The cable is strong yet easy to manipulate for locking up. It is stout and well made. It's not difficult to connect the lock together. The mechanisms seem to fit smoothly and intentionally. The little red button on the storage bracket makes for a one handed removal of the lock in a quick and easy motion. It makes locking up a very speedy task when you're running late for class. When the bike racks are crowded, you can always stretch this lock so you can lock up. Those Ubolt style locks always have to be hard against the rack to lock up and thus will make you late for class. This is the way to go for a hurried student at a crowded bike rack. I'm very pleased with this purchase.

This bike lock is an effective deterrent to common bike thieves, though it may not prevent professionals from stealing your bike, as they use bolt cutters to cut through locks like this variety. But for most outings where you're leaving your bike for only an hour or so, especially if in broad daylight, it is plenty secure. I made this mistake many years ago while in school, leaving my bike among many others until the library closed. When I went to retrieve it, I found several cut bike locks strewn around; they may have stolen a dozen or so at the same time. Better to use something bigger and much heavier in those instances - lesson learned!

I DO understand that this lock is simply a deterrent, and could probably be easily cut. But, with that being said, I think it’s a great buy. I live in a nice area and hope that a simple deterrent system will be enough.While I love the color options, I went with the black/grey. I just think it makes it look like a higher quality lock as opposed to a bright, fancy color. Believe me...I wanted pink. 😉I haven’t tried the mount. I think it would be in the way of the step-through. I have a rear bag I store it in, but will mount it if/when needed.It’s easy to use and I wanted a 5-numeral code so when my friends visit and use the bike I can just change it to something they’ll remember: their ZIP code!Should I find that it’s quality and security don’t lead up to my expectations, I will definitely update my review. Until then, and I sure hope I don’t have to, I’m pretty happy with the purchase.

The functionality and weight was great. Willit the lock prevent your bike from being stolen, will not. My bike was stolen here in New Orleans. The cable was snipped pretty easily.

We purchased 3 of these locks prior to taking a trip so we could secure our bikes while we were away. We woke up one morning to discover someone had attempted to cut off one of the bike locks overnight. They made it thru the outer shell and managed to break a few inside wires, but there was still a solid amount of wire left that they were not able to break thru. We were quite impressed with how well the lock worked! As soon as we returned home, we ordered a replacement lock to have for our next trip.

This is very strong chain. Easy to install. I've been using this for two years now, and it is still in a good shape. When I am not using it, it can neatly store in the back of the seat, as shown in the picture.

The cable was shorter than I expected to be practical - no fault of the product. Because of that, I’ve only used it a few times in a full year. Fatal feature: I nearly got stranded because the lock wouldn’t open once it was locked. Finally yanked hard enough that it let loose. I have since tested it several times and have decided to throw it away. It’s never been outside for long, and never been rained on, so it’s faulty by design or construction.

Bought this 3 years ago. Worked great until last week - lock is stuck and won’t open. Frustrating!