I use this rack drawer in my studio rack, it houses small documents, dongles, pens, and some small hard drives. A catch all of small stuff. It's great for that. it slides smooth and very ergonomically. I can't tell if the pressure lock would keep it closed on the road, but for a studio rack it's perfectly fine, even when moving the rack a bit. I did not test this rack drawer in a unit that is on the road.
Shame it has no back rack rails so I could also fix it at the back. I use this drawer also to support some cables and power adaptors of rack units that are placed above, so some way of also fixing the back to the rack housing would have been nice. It is probably overprudent, but I made something myself anyway, just in case. One star less for that. Otherwise a good and inexpensive rack drawer.