Blocks
A much bigger block with a cavity/hole going through the center.
Chips
3/8" Chips. Very small stones
Bags
An empty small bag.
Small empty heavy duty sand bag.
Quarry Products
A tonne bag of sand.
Gravel
Screenings-Very dusty gravel
Regular 4" block with a 90 degree offset.
Plastering sand
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.