Blocks
Regular 4" block with a 90 degree offset.
Quarry Products
Drainage stone-small smooth rounded stone
A tonne bag of sand.
Gravel
Aggregate mix
A much bigger block with a cavity/hole going through the center.
Regular 4" block with a 30 degree offset.
4" clean large stone
The bigger thicker blocks up from the 4"
Concrete block that weighs one tonne.
Regular sized blocks used for most building jobs.