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.
Chips
Quarry Products
2" clean medium sized stone
Drainage stone-small smooth rounded stone
Blocks
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
A tonne bag of sand.
Regular 4" block with a 30 degree offset.
Bags
An empty big bag.
Regular 4" block with a 90 degree offset.
Regular sized blocks used for most building jobs.