I don't have a photo, but I use a NYC fahgetaboudit (or however you spell it) and shackle it around the rear wheel, seat tube, and the post I'm locking to. It's a really snug fit (if I don't line it up so the shackle passes through the rear wheel at just the right angle I can't get the lock closed) so this makes it just about impossible for a thief to get any tools in to disable the lock.