Blocks
The bigger thicker blocks up from the 4"
Gravel
Clause 804
Bags
An empty small bag.
Quarry Products
4" clean large stone
A tonne bag of sand.
Regular sized blocks used for most building jobs.
2" clean medium sized stone
An empty big bag.
Chips
3/8" Chips. Very small stones
Regular 4" block with a 90 degree offset.
A much bigger block with a cavity/hole going through the center.