An empty big bag.
An empty big bag which can hold a tonne of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
Concrete block that weighs one tonne.
Regular 4" block with a 30 degree offset.
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
Regular sized blocks used for most building jobs.
The bigger thicker blocks up from the 4"
Aggregate mix
Quarry Products
4" clean large stone
Chips
3/8" Chips. Very small stones
Drainage stone-small smooth rounded stone