It's 50mm and is the one in this video (same packaging):http://www.youtube.com/watch?v=gGpLoxiYxTs
and I think the same as Wiz's video (but different packaging)http://www.youtube.com/watch?v=O94E_JOtqW0
Again, all the pins in the one that fell apart are standard pins -- NO security pins, despite claim on the packaging.
The replacement I got will rake open in about 2-3 swipes every time. I've SPP'd it too, but it's so tempting to just rake it -- even after setting a few pins.
You can definitely see the circular marks on the sides of the lock.