Gravel
Aggregate mix
Quarry Products
Drainage stone-small smooth rounded stone
Blocks
A much bigger block with a cavity/hole going through the center.
Bags
An empty small bag.
Clause 804
A tonne bag of sand.
Concrete block that weighs one tonne.
Chips
3/8" Chips. Very small stones
Regular sized blocks used for most building jobs.
2" clean medium sized stone