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
A much bigger block with a cavity/hole going through the center.
Gravel
Screenings-Very dusty gravel
Regular sized blocks used for most building jobs.
The bigger thicker blocks up from the 4"
Aggregate mix
Quarry Products
Drainage stone-small smooth rounded stone
Chips
3/8" Chips. Very small stones
Clause 804
4" clean large stone