Blocks
A much bigger block with a cavity/hole going through the center.
Quarry Products
4" clean large stone
Bags
Small empty heavy duty sand bag.
Concrete block that weighs one tonne.
An empty big bag.
Regular sized blocks used for most building jobs.
Gravel
Clause 804
Regular 4" block with a 30 degree offset.
Screenings-Very dusty gravel