Squire Matterhorn Mini Disc Brake Lock

I wasn't expecting miracles for less than 60 quid, but this lock is shockingly bad. I was using it as a second lock on my 22mm chain whilst at home and as a portable lock during trips. Fits through my sprocket so I thought winner.
Today however, the locking mechanism failed, whilst it was locked. Key wouldn't budge. Luckily, there is just enough gap at the top of the key to get a small steel rod through and I was able to brute force turn it that way. The lock has now completely seized in the unlock position, so it's going back to SBS for a refund. I was going to buy another more secure Squire padlock, but no longer.
To end on a positive note, SBS were and continue to be first rate and I will carry on using their services.

This is a great little disc lock, it's quick and easy to use and takes up minimal storage space. The included minder cable is a bit on the short side, it only reaches the gear change lever on my bike with the disc lock fitted on the rear wheel.