I'm using under my credenza without the wheels. File tips pover easily when top drawer is full. I had to put a weigjt in the back of the bottom drawer which has helped.. Other than that no other problem.
Nice cabinet. Wheels went on nicely. Make certain you have the correct wheel to match the screws. It seems this has been a problem for some. My problem is that it wants to tip forward even when the cabinet is sufficently filled. Bricks placed on the bottom of the cabinet interior at the back have helped to stabelize it. It is quite lightweight.
Screw threads very hard to manage with handles and wheels. I'm going to have to leave assembly until a friend can come over with different screws and screwdrivers. (No visitors permitted in my community at present.) Otherwise I'm sure it'll be OK for the money. It's certainly small and neat.