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.
Blocks
Concrete block that weighs one tonne.
Gravel
Screenings-Very dusty gravel
Bags
Small empty heavy duty sand bag.
Aggregate mix
Regular sized blocks used for most building jobs.
Quarry Products
Plastering sand
An empty small bag.
Clause 804
Drainage stone-small smooth rounded stone
Regular 4" block with a 90 degree offset.