Block dimensions:12″HIGH X 17″LONG X 4″THICK
Blocks
A much bigger block with a cavity/hole going through the center.
Regular 4" block with a 30 degree offset.
Bags
An empty small bag.
Quarry Products
A tonne bag of sand.
2" clean medium sized stone
Small empty heavy duty sand bag.
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.
An empty big bag.
Gravel
Clause 804
Plastering sand