Concrete block that weighs one tonne.
Concrete block that weighs one tonne with many heavy duty uses.
Blocks
A much bigger block with a cavity/hole going through the center.
Bags
An empty big bag.
Small empty heavy duty sand bag.
The bigger thicker blocks up from the 4"
Quarry Products
4" clean large stone
Regular sized blocks used for most building jobs.
An empty small bag.
Gravel
Clause 804
Regular 4" block with a 90 degree offset.