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.
Bags
An empty small bag.
A much bigger block with a cavity/hole going through the center.
Regular 4" block with a 30 degree offset.
Gravel
Aggregate mix
Chips
3/8" Chips. Very small stones
Clause 804
Regular 4" block with a 90 degree offset.
Quarry Products
4" clean large stone
Regular sized blocks used for most building jobs.