A tonne bag of sand.
A tonne bag of sand made up in store and ready to be collected.
Blocks
A much bigger block with a cavity/hole going through the center.
Bags
An empty small bag.
Gravel
Clause 804
Quarry Products
Drainage stone-small smooth rounded stone
Aggregate mix
Chips
3/8" Chips. Very small stones
An empty big bag.
Regular 4" block with a 30 degree offset.
Plastering sand
Regular sized blocks used for most building jobs.