Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Been using this for a couple of years now with no issues, lock has been good and hasn't had any binding issues which is fairly common leaving locks out in all weather.Only negative is the poor key design, metal keys with thin plastic key ring is very poor, had the plastic break on one key and had to take a 10 mile trip home to get the secondary key....

Great lock that is fit for purpose. I use to it to secure my bicycle commuting to work. The lock is long enough to fit around the frame of my bike and the rear wheel which has a 40mm depth rim 700c tyres. I noticed some reviews mentioned problems with the keyhole or rust. Don't force the lock; be gentle with it and keep the keyhole facing towards the ground so that if it rains it's not exposed and this will prevent any rust. I have no issues with this lock. It's very versatile and robust.

Like others I found this a little tricky to open sometimes but once you get the knack for it, it’s no problem. It looks great and I think it puts thieves off being red and thick, happy! Bike hasn’t been stolen yet lol

It’s a quality product, Feels very robust and the covering on the chain is good, but I was a little caught out with the length.I measured the length I needed, and this appeared just long enough. The measure of length is correct from end to end, but because the chain attaches to the lock in the middle at a hard right angle , not at the end, you lose an inch or more ... unfortunately that meant the lock was just a fraction too short for my original use and I needed to buy an alternative.The quality of the lock is such, that I still kept it and intend to use it elsewhere.

Good lock…

i love it it looks good with my black and red, hybrid, dawes pushbike and keeps it secure. it will never scratch it with the soft cloth casing and is easy to open and close. fantastic buy really worth every penny, especially as it is far more expensive elsewhere, such as Halfords.

I used this lock to go through my bucket seat and through my steering wheel as an extra deterrent , looks good also great quality outside casing so Doesn’t scratch of my interior 10/10 would recommend

This lock works well, the fabric chain cover means I don't get scratches all over, and I can tie it to my frame tightly enough to go for a ride without it rattling.The lock mechanism is good: it doesn't lock automatically, so it can't be shimmed. Your bike will never be safe outside (at least not here in Cardiff), but you definitely don't want the easiest to steal bike on the rack. This lock is well worth it!Edit: After about six months of regular use the mechanism becomes a bit unreliable, you have to fiddle with the key for a minute in order to lock or unlock the mechanism.