Assembly of the handles and rollers went well since I did not have to get up and down from floor level to screw the plates down. I am in my 80's. This might not have been doable for some people I know. It would be helpful to have one locking wheel to hold in place during an earthquake or similar jolt. My floors are not even so it would easily roll across the room.
This is only ok if you do not plan to load it with files. If it is full it will come off its tracks all the time. And then it becomes extremely difficult to close let alone lock.
Overall the file cabinet is fine. However I do not like the fact that the bottom drawer when locked still opens slightly on one side. Not very resistant.