Brake disc part number

[STUGT3]

I'm sticking with the sentiment of a plague on the inventors of disc locks !!!
The problem seems to be habit, as in I rarely use one when I am out, but I always use one in the garage, and as I paddle the bike back out of the garage it wouldn't matter even if I did forget to remove it.

Thats what i did as i paddled bike out of garage lock hit front guard support & cracked it ,once was bad enough but dumb a#$# me went & did for a second time