An empty small bag.
An empty small bag which can be filled with 4 stone weight of sand, gravel or chips. Bought on its own as an empty bag.
Chips
3/8" Chips. Very small stones
Blocks
Bags
An empty big bag.
Gravel
Screenings-Very dusty gravel
The bigger thicker blocks up from the 4"
A much bigger block with a cavity/hole going through the center.
Quarry Products
A tonne bag of sand.
2" clean medium sized stone
Aggregate mix
Concrete block that weighs one tonne.
Regular 4" block with a 90 degree offset.
Clause 804