An empty big bag.
An empty big bag which can hold a tonne of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
Concrete block that weighs one tonne.
A much bigger block with a cavity/hole going through the center.
The bigger thicker blocks up from the 4"
Quarry Products
4" clean large stone
Plastering sand
Regular 4" block with a 90 degree offset.
2" clean medium sized stone
Chips
Regular 4" block with a 30 degree offset.
Bags
An empty small bag.