I’ve found this Oxford security chain to be of good quality & easy to use. I like the way the shackle comes away from the body of the lock as this makes it easier when attaching to the chain. A nice feature is the option of having the siren armed or not depending on which way round the shackle is placed in the body which is clearly marked, great for when your out on your bike & left the chain locked to a ground anchor. Overall I’m pleased with this security product, it is heavy so I use it at home & used a lighter one for when I’m out & need to lock up my bike. One slight criticism is that I think the siren could be a little louder, it’s not quiet but my disc lock siren is louder compared to this. Not the be all & end all. Overall a good product.