"2 failures in 2 years - one through internals rusting? and seizing - freed off with WD40 but then became unreliable. The second through lock mechanism failing - key turned but mechanism did not unlatch and I had to cut it off with an angle grinder. The shackle shroud is not steel but a weak alloy which if hit breaks (and it's only held on by 2 very small rivets). Will buy a decent ABUS next time as it should be cheaper in the long run."