AKM Anti-Theft Motorcycle Chain Lock 180cm/6ft Heavy Duty Bike Chain Lock Durable 12mm Thick Security Bicycle Chain Lock with 4Keys 16mm U Lock Disc Lock for Motorcycles,Containers,Trailers,ATV

We've had this chain for a year and a half. It is attractive, holding up well, the cover over the chain is preventing damage to the bike, very pleased with that. I waited to leave a review so I could report on how it is wearing. It's wearing great, the included small U Lock is still functioning and not stuck, which is always good. The bike is stored in a covered but outdoor parking garage, so somewhat exposed to elements but not direct rain, just Florida humidity.We use the chain in 2 ways: out and about in a busy, downtown urban area that is notorious for bike theft. Had a bike stolen while we were at lunch here (only had a cable lock, never ever do that). No one will have time in broad daylight to cut through this chain in this urban environment, it is heavy heavy and will scare off any potential thief. You only need to be one of the more protected bikes downtown, as the thieves go for unlocked or cable locked bikes. The other use for us is locked up inside our gated condo garage. Twice our neighbors have had bikes stolen inside the garage, but not ours. Again, I think being one of the more secure set-ups compared to what else is available is making the difference for us. Could someone saw through the chain given enough time? Certainly, but it would take some time and tools.What we like is that our big U Locks, while they are lighter and really quick to pop on and off, super easy to use--- there are times that we don't have a good spot to lock them too, and they won't fit around a light pole or some other unique place. Also at home, the place we lock them too (a bolt in the cement wall), a U Lock wouldn't reach-- the chain gives you so many more options of how to lock even 2 bikes. But it is HEAVY, so heavy to work with, heavy to ride with, cumbersome to unlock it, wrap it around somewhere to travel with, finagle around to get it relocked. So if you don't have a specific reason to need the chain, a big enough U Lock is super easy. They say U Locks can be pried open, and cut open easier, so for overnight security, that is another reason we have both a chain and a U Lock.

Heavy weight lock. Very good material.

I think that it is a good deterrent.

The only issue that I have with this lock is that it needs to be lubricated every so often or it becomes difficult to lock/unlock. Otherwise it is solid and fits well with my heavy bike chain.

This is a chain I am most sure no one is going to spend the time or risk the attention it will take to break. I use this for my thousand dollar scooter with full confidence.

Took this chain to work and left it wrapped around a carport post. I generally am the "last one" out of the building and don't think twice about whether the bike will be there when I leave.After a couple of months, it is much easier to turn the key to lock/unlock. I have learned to press the key all the way inward before trying to turn it. Now it's a piece of cake every time - no struggles.The canvas-type covering ensures your rims won't get dinged up if you're minimally careful.Having four keys would make it convenient to "leave" one at different locations but, at 8' in length, it is really too heavy for me to cart around. I'm glad I only have a single place I need the security.

This lock is not made for an NYC/Big City environment but for most everywhere else I think it would work as intended. Not the highest quality chain or lock but for those campsite stays or rural settings I am comfortable with it. The lock is definitely the weak piece of the two.

I had bought this for my motorcycle but decided to chain up my ebike in my carport. This chain felt very heavy, safe and indestructible. Unfortunately for me the crime in LA is just so prepared to steal your stuff no matter what. I'm amazed they were able to cut this.