Blocks
The bigger thicker blocks up from the 4"
Concrete block that weighs one tonne.
Bags
An empty big bag.
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
Quarry Products
Plastering sand
Screenings-Very dusty gravel
Regular 4" block with a 90 degree offset.
2" clean medium sized stone
Aggregate mix