I have used the same disc lock for about 10 years but lost it, and if I was looking for a new one, I purchased the same item as I had it again. It was easy to take out and yellow was conspicuous or mischievous or theft at the destination was not once before so it can be recommended as a product. When I write the impression that I tried for a long time ... When I drop it on the ground the parts of the plaque will crack. (Small) I forgot to take off the lock and tried to run a few times. I have never used the attached case once.