Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Cover wears out, lock wears out.

I wore out the lock after 3 years of daily use to the point where it would not unlock and had to be cut off with a torch.The cover meant to protect your bike's finish from the chain is very thin and flimsy, it also wore out and as a result my bike is covered in dings.The only thing saving this from one star is that it genuinely did save my bike at one point as you can see where someone tried to take boltcutters to it and was unsuccessful.Even the Masterlock bike chain has a crappy cover, I wound up making one from thick upholstery fabric for this chain and it's working much better. I replaced the lock with a boron carbide Masterlock.