Blocks
A much bigger block with a cavity/hole going through the center.
Bags
Small empty heavy duty sand bag.
Quarry Products
A tonne bag of sand.
Drainage stone-small smooth rounded stone
Regular 4" block with a 30 degree offset.
2" clean medium sized stone
Chips
Gravel
Aggregate mix
An empty big bag.
Screenings-Very dusty gravel
Regular 4" block with a 90 degree offset.