An empty small bag.
An empty small bag which can be filled with 4 stone weight of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
The bigger thicker blocks up from the 4"
Regular 4" block with a 90 degree offset.
Gravel
Aggregate mix
Bags
An empty big bag.
Concrete block that weighs one tonne.
Regular 4" block with a 30 degree offset.
Quarry Products
2" clean medium sized stone
Clause 804
A much bigger block with a cavity/hole going through the center.