Blocks
Regular 4" block with a 30 degree offset.
Quarry Products
2" clean medium sized stone
The bigger thicker blocks up from the 4"
A tonne bag of sand.
4" clean large stone
Gravel
Screenings-Very dusty gravel
A much bigger block with a cavity/hole going through the center.
Drainage stone-small smooth rounded stone
Regular 4" block with a 90 degree offset.
Plastering sand