Blocks
A much bigger block with a cavity/hole going through the center.
Bags
An empty small bag.
Quarry Products
4" clean large stone
Plastering sand
Regular sized blocks used for most building jobs.
Gravel
Aggregate mix
Drainage stone-small smooth rounded stone
A tonne bag of sand.
Concrete block that weighs one tonne.
Small empty heavy duty sand bag.
2" clean medium sized stone