I purchased this lock because it is one of two locks that, per OnGuard, can be used with the 8018L Beast Chain to qualify for the "Anti-Theft Protection Offer". I ultimately sent the lock back. After a week on the beach in San Diego, the lock showed signs of rust. Admittedly, though, that is a very harsh environment. However, one of the yellow side pieces had also fallen off, and I can't justify that as easily. Lastly, I found it *very* difficult to close the lock with 8018L chain. It had to be positioned just perfectly with the tip of one link in the hole of the other: side by side as in my picture below, the lock would not close. Incidentally, after sending this back I purchased the other of the two locks that OnGuard insists you use with the 8018L chain, the 8046 disc lock. It is too big to fit through the links of the 8018L chain, so I had to send it back as well. I'll end up purchasing a lock that is *not* part of the "Anti-Theft Protection Offer" by OnGuard, but that is no loss because that offer too restrictive to be of value, in my opinion, anyway. So a word about the "Anti-Theft Protection Offer": As it is one of the "features" of this lock, I think it's important that customers understand how restrictive this offer is before allowing it to positively influence their decision to buy an OnGuard product. First and foremost, you have to *pay* them to register for it. (See pic). Oh, and the thief can't have used an angle grinder or any other power tool in the theft. How do you think a thief defeats a chain? They sit there and rub it with a file? Also, you have to register *one* bike or "motorsport vehicle" and then that's it. Registered your mountain bike but your road bike was locked up with your OnGuard and got stolen? You're out of luck. You have to use certain products (like the 8018L chain) with certain other products (like the 8046 lock it's not compatible with) or no reimbursement. The thief has to leave the broken lock or chain behind. You have to register within 15 days of purchase of the lock. The offer is void in NY, or outside the United States. And lastly, if your home insurance policy is going to pay you $3000 on your $3500 bike, they're only going to pay $500, not the $3500 value of your bike...but who cares, right, because it's never going to get that far since your thief used a battery-operated angle grinder? I wasn't tremendously impressed by this lock, and even less so with the offer that backs is up.
