I used this dolly to move a 640 pound gun safe. I was worried that it would be a difficult job, not with this dolly! I did have to cut the cross tubes down to make the dolly 26 inches wide so that the dolly could get thru all of the doorways. The safe is only 20 inches wide. I also ratchet strapped the safe onto the dolly when I was moving it. There are ridges on both sides that allow the use of ratchet straps. In addition, I used a 3/4 plywood piece as a ramp at the front door, I did not want to have to lift anything. The dolly will clear interior door thresholds with no issues. One person can easily push and maneuver 640 pounds thru hallways and doorways. This dolly worked for me and I am sure I will find other uses for it. I was not compensated in any manner for this review. The pics show the safe in the final room, straps are removed, and the safe is still on the dolly.