Screenings-Very dusty gravel
A much bigger block with a cavity/hole going through the center.
3/8" Chips. Very small stones
Clause 804
4" clean large stone
Regular 4" block with a 90 degree offset.
Drainage stone-small smooth rounded stone
Small empty heavy duty sand bag.
The bigger thicker blocks up from the 4"
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.