Kevin Kwrote a review of OnGuard Mastiff Chain and Disc Lock on June 28, 2016
Familiarity: I've put it through the wringer
I really like this lock more and more I use it. Much easier to carry around than a medium ulock. I like to wrap it around my handle bar while commuting. Good length to tie up and comes with plenty of extra keys. Every once in awhile the shank has trouble getting hung up on the edge of the pad lock housing when relocking but overall its my go to when out around town for errands.