Very common problem. Will buy a case of 100 and they're great. Buy a few more hundred and they're totally different from the first batch. These have extremely weak hubs on the left side. Disc barely clicks in, but just rests in. One soft drop and the disc pops off. Unusable for shipping without putting some kind of foam or something inside to prevent popped discs in transit. For storage, or for a use where product is not being shipped, it will probably work.
Also had a handful where the latching tab area was missing plastic so they didn't click shut. Had to discard maybe 5 per 100.
