Blocks
Chips
3/8" Chips. Very small stones
Concrete block that weighs one tonne.
Regular sized blocks used for most building jobs.
Quarry Products
Plastering sand
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
Regular 4" block with a 90 degree offset.
Bags
An empty big bag.
Regular 4" block with a 30 degree offset.