ABUSDiskus 20/70 Heavy Duty Stainless Steel Disk Padlock - Rustproof Lock with 3/8" Shackle - Made in Germany - Keyed Different

Really good lock. Purchased for my storage unit after watching the LockPickingLawyer on YouTube so I am fully aware it is not impenetrable but it is very well made and probably the average person who would want to break this would need a grinder so it is a relatively safe option for a storage unit. Never seen any sign of rust and I have used this in Florida so the material on top of the build quality are top notch. The only thing I would notice is that sometime it it a bit tricky to insert the key but I suppose that adds to the security in same ways. Some reviews complained about the price but when the cheapest lock from Walmart/Home Depot is close to $10 I would say this price for this is justified.

Use this (as well as a burly chain) to lock in my bikes and my Kuat and I feel very safe with this on. It’s so thick and would be really hard to cut through (In saying that tho I’m not a thief so don’t take my word for it) The lock is small yet very thick, compact and would be hard to cut due to its design.

Needed a new storage lock and after doing some research online, this lock kept coming up as a top choice. Found this listing on Amazon and it arrived very quickly, so we were able to use it the following evening. This timeline helped immensely! As for using it: it's durable and has been working well! Super easy to use, and we feel secure in using it. So far so good!

Great lock. Smooth operation, but I added a drop of oil to the discs. I have opened and closed the lock a few hundred times with no issues. I think most negative reviews are from folks that do not understand disc cores and are only familiar with pin locks (cheap door/padlocks). Disc cores can sometimes need some key manipulation to align the discs and fully insert the key. This lock may not be for someone who will not spend 2 seconds to properly insert the key before forcing it open... breaking the key.

Build is secure. Has survived a year with constant rain outdoors with only minimal corrosion but the key is finicky sometimes and doesn’t want to turn unless you have the right amount of pressure pushing into the lock cylinder

Externally this lock looks very similar to so many of the other disc or puck style locks. The difference is not just that the shackle is hardened, which makes it very difficult to cut or burn through, but the Abus Plus core which uses a disc detainer system rather than a traditional, and shockingly easy to pick 4 to 5 pin system. I wanted to replace the cheapy uhaul lock that I purchased ($8, that should be the first red flag) when I got my most recent storage room. I already had a Master disc lock that was supposed to be "maximum security" Master Lock Padlock, Magnum Stainless Steel Discus Lock, 3-1/8 in. Wide, M50XD. While it is true that is does in fact have a boron carbide shackle that is exceptionally hard, harder than most hardened steel, it comes in a package that is comically easy to pick. It is worth pointing out I am not locksmith, not do I wear ski masks on the weekends and climb skyscrapers with suction cups while avoiding people with talking Trans Ams.With all that in mind, it took me about only about a few hours to learn how to pick that lock in less than a minute using (initially) metal automotive probes I modified based on what I saw in several videos. Ultimately I used some soft wire stock I crushed and modified using nothing more than a common hammer and a Dremel fit with a sanding barrel. The method is (I believe) called "zipping" or "raking". Numerous videos I have found have suggested, not in any kind of hyperbolous (sure, that's a word) fashion, that the the Abus disc detainer core locks require such a skilled smith that one video even suggested that if someone CAN pick the lock, they probably won't be the person stealing from you.Saying something is "pick proof" is a misnomer at best because in most (certainly most average CONSUMER) cases, given enough time, almost anything can be picked, as such, pick "resistant" is probably the term to use. Bottom line, this offers a MUCH higher level of security than comparable commonly recognized US consumer level products, inclusive of virtually everything found at Lowes, Home Depot, or similar big box. I was duped by the packaging, which is what many MFRs are counting on. I saw boron carbide and thought, well that MUST be the best, not realizing how easily it can be breached. Imagine keeping your Lamborghini in only a car port with a sign on the window saying, "Please don't steal this car." Live and learn I suppose. The really amazing thing about all of this is that the Abus unit is only about $10 more than the Master. I have since gotten 4 more for other needs. Money well spent, and not much at that.

***Update: After 2 weeks of waiting, I got sent a new lock and keys directly from ABUS and everything works great now!I ordered one of these for a storage unit and they do come with two keys that are keyed to specific number by ABUS. Both of these factory keys work great with the lock and I have had no issues there.The issue comes with trying to order spare keys from ABUS. I registered the lock on ABUS' website not long after I received the product and I wanted to order two spare keys for it, so they ask to punch in the number that is on the card attached to the keys. I do that, pay for my keys, and a week later I received two new keys that look identical to the factory keys that shipped with the lock and NEITHER WILL OPEN THE LOCK. Both with go in completely and start to turn the internal mechanism but they will not fully turn to open the lock.I emailed ABUS and provided pictures of the serial on the back of my lock, and pictures of the security key number that were attached to the keys and I said "Im not sure if I accidently got the wrong spare keys shipped for what happened" and asked about the possibility of reordering spare keys. I get no response from ABUS for a week but magically two more keys from them were shipped to me (for free, thankfully) and I received them two days ago: THOSE DIDNT WORK EITHER!I am currently waiting on a response from ABUS to see if I can take one of the originals anywhere and have spares directly copied since I must have gotten the wrong key code mailed with the original keys. I will update with any other info. or I might just return this lock and look elsewhere.