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
Small empty heavy duty sand bag.
Blocks
Regular 4" block with a 30 degree offset.
Concrete block that weighs one tonne.
Gravel
Screenings-Very dusty gravel
Quarry Products
2" clean medium sized stone
Chips
3/8" Chips. Very small stones
Plastering sand
Regular sized blocks used for most building jobs.
A much bigger block with a cavity/hole going through the center.
Clause 804