VEVOR Ballast Box, 3-Point Category 1 Tractor Ballast of 800lbs Capacity, for 2 Inch Hitch Receiver, Heavy-Duty Steel 4.3 ft³ Large Volume Loader Attachment with Sliding Door, Red

The upgraded version is slightly larger than the low-spec one! The capacity is different, everything else is the same,

It can be used on wet or dry concrete. You cannot empty it after using the wet one.