Block dimensions:12″HIGH X 17″LONG X 4″THICK
Bags
An empty small bag.
Quarry Products
A tonne bag of sand.
Gravel
Aggregate mix
Blocks
A much bigger block with a cavity/hole going through the center.
Regular sized blocks used for most building jobs.
Clause 804
Regular 4" block with a 90 degree offset.
4" clean large stone
Drainage stone-small smooth rounded stone