Bike U Lock - Sigtuna Bike Lock Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle U Lock with Sturdy Mounting Bracket for Mountain Bikes, Ebikes, Scooters

I use it for like a month and it hadn't disappointed me yet and I doubt it will.

I wanted to upgrade my bike lock (actually, one of my bike locks - I use two U-locks in the city) to one that was thicker and - more important - has dual locking mechanisms so that two cuts would be required to remove the lock. The Sigatuna is a bit thicker, and has the dual locking mechanism (there seems to be some controversy as to whether its really 16mm or whether that is padded by the plastic coat on the steel - I don't know the answer). I thought the reviews here were encouraging so ordered it.I've been quite happy with it for the 1 month I've had it. Its a bit heavier than my other U-lock (Krypto-Lok) but definitely not "too heavy". And I suspect its much better security. The key has been easy to turn - something that was a problem with the other Master U lock I had that this replaced.I don't use the frame mounting bracket so can't comment on that - I have a rat-trap carrier and I keep it in that secured with a bungee cord.And I actually don't use the cable - and I think its generally a bad idea because all of them are easily cut. I have found that a much more convenient and secure way is to have two U locks. So I have this as my "heavy duty" lock, and a Krypto-Lok as my secondary one (and which fits through the perforations on my helmet allowing that to be securely locked to the bike). A second U lock is so much more convenient to carry than a cumbersome cable. I have the Kryptonite lock mounted to the frame, and keep the Sigatuna lock in the rat-trap carrier.It doesn't offer theft protection insurance - but that doesn't bother me. (1) My bike isn't worth that much - less than the deductible! Well, its wort a lot to me, but not money. (2) Somehow I suspect that the fine print on all those bike lock insurance plans are smarter than most bicyclists - and I rather doubt they really ever pay.

My requirement is to get a lock under $30. After browsing through several options, shortlisted 2 finally.1. SIGTUNA Bike locks - 16mm U Lock with Steel Chain Cable2. Kryptonite Kryptolok Series-2 Mini-7 with Steel Chain CableInitially I thought I would go with Kryptolok as its sleek to fit it in the bike. But after trying out both, I decided to go with SIGTUNA itself.- Though SIGTUNA is bulkier than Kryptolok, in terms of both lock head and the shackle, it didn't look that bulkier when you put on the bike. Also heavier it is, more safer it is!- SIGTUNA is wider than Kryptolok, which helps to lock the wheel with the frame and the pole easily and comfortably.- SIGTUNA locks on both the side of the shackle (Double Deadbolt locking), while the Kryptolok has a bent foot design on one end. My understanding is, it requires to cut on both the sides to release the lock, while on Kryptolok its enough to cut on one side and the shackle releases automatically on the bent foot side.However, few small issues / concerns..- The mounting system is made of plastic. I'm not sure how long it will hold the lock. Also, it is not sturdy and wobbles a lot when you mount the lock.- The mounting system cannot be mounted on the horizontal bar of my bike, as it had a cable on the bottom for the read breaks.- The lock is not that smooth. Sometimes it gets stuck and need to retry couple of times.- The Key Hole Cover is not that great. Feels like cheap plastic.- May be the lock head could have been less bulkier for the 16mm shackles.SIGTUNA Vs Kryptolok- Steel Shackle: 16mm vs 13mm- Weight: 3.75 lbs vs 2.75 lbs- Number of Keys: 3 vs 2- Cable Length: Both are 120 cm (4 ft)PS: Amazon prize might be different for Kryptolok. Found in REI for $25.Shortly, I would not complain the lock for the money! Definitely would go for it and recommend the same.

I did the research and found your U lock (Series U Wodan 16) to have very good reviews from other cyclist. I have a new bike and I really wanted to make sure that it was safe in most any environment, city or urban. I live in a pretty safe area now but this is also an investment in the future.The lock is easy to use and to mount to my bike frame. Although it is a bit heavy it is very easy to carry in my pack or mounted to the frame. I don't always use the cable that comes with it but it is a great option if I need to leave my bike longer in a higher crime area. I have figured out the best way to lock my bike with both the cable and without and it is really quick and definitely secure. It came with three keys. At first I thought the key hole was damaged because I could not slide the sleeve to show the hole. It was stiff but now loose and I really like that it provides a cover to protect from dirt or rain. The velcro on the cable is a great option too as I have often strapped it to the U lock itself to carry as I ride. There are a lot of great things about this lock and the only thing that I don't like is the button clip that allows the lock to be removed from the frame attachment. After many uses it seems to be more loose and shakes as I ride. The red plastic button doesn't have the best quality. Another annoying thing is getting the key to unlock. The key hole and key are fine but some reason it takes a little fiddling each time I want to unlock it. I have to push the key in hard or wiggle it. The lock or keyhole aren't broken just annoying as I have to mess with it each time for a minute to get it to unlock.

Lock, cable, keys and holders included. Soft plastic covered cable won't scratch and easy to feed through frame, tire, and around a pole. My frame is too thick for the mount but was able to attach to the seat stem.Further, I don't even need to take the lock off the holder. Just unlock it, feed the cable around where I need it and back onto the lock. Working out great and should take anyone a little time to get through it.Seems to by a good value for what I got and a little piece of mind.