Overall these are quite good and work well for my purpose.
However, all the pictures show 2 wheel locks per dollie when only 1 per wheel is supplied.
The instructions are inaccurate as far as it says there are locking washers to fix the wheels in place when there are not.
Instead 1 large washer and 1 small washer is supplied per wheel. I fitted the large washer underneath to spread the load.
The supplied stamped steel spanner is useless and should be discarded. Anyone buying these dollies will have the correct tools in their garage.