Blocks
A much bigger block with a cavity/hole going through the center.
Quarry Products
A tonne bag of sand.
The bigger thicker blocks up from the 4"
Gravel
Aggregate mix
Chips
3/8" Chips. Very small stones
Drainage stone-small smooth rounded stone
Regular 4" block with a 90 degree offset.
Screenings-Very dusty gravel
4" clean large stone
2" clean medium sized stone