A much bigger block with a cavity/hole going through the center.
They are a much bigger block than the 4″ and 6″ blocks with a cavity/hole going through the center of the block. Sold in bales of 20 or by single blocks on their own.
Gravel
Clause 804
Blocks
Bags
Small empty heavy duty sand bag.
Quarry Products
Drainage stone-small smooth rounded stone
A tonne bag of sand.
The bigger thicker blocks up from the 4"
Plastering sand
An empty small bag.
Screenings-Very dusty gravel
Chips
Regular sized blocks used for most building jobs.