A tonne bag of sand.
A tonne bag of sand made up in store and ready to be collected.
Blocks
A much bigger block with a cavity/hole going through the center.
Gravel
Aggregate mix
Chips
3/8" Chips. Very small stones
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.
Quarry Products
Plastering sand
Bags
Small empty heavy duty sand bag.
4" clean large stone
Regular 4" block with a 30 degree offset.
Drainage stone-small smooth rounded stone
The bigger thicker blocks up from the 4"