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.
Bags
An empty big bag.
Blocks
Regular 4" block with a 30 degree offset.
Gravel
Clause 804
A much bigger block with a cavity/hole going through the center.
Chips
The bigger thicker blocks up from the 4"
Concrete block that weighs one tonne.
Quarry Products
2" clean medium sized stone
Regular 4" block with a 90 degree offset.
3/8" Chips. Very small stones
4" clean large stone
Plastering sand