Blocks
A much bigger block with a cavity/hole going through the center.
The bigger thicker blocks up from the 4"
Bags
An empty big bag.
Quarry Products
2" clean medium sized stone
Small empty heavy duty sand bag.
Regular sized blocks used for most building jobs.
Drainage stone-small smooth rounded stone
4" clean large stone
Regular 4" block with a 90 degree offset.
Gravel
Aggregate mix