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.
Bags
Small empty heavy duty sand bag.
Blocks
The bigger thicker blocks up from the 4"
Quarry Products
A tonne bag of sand.
Chips
Concrete block that weighs one tonne.
Gravel
Aggregate mix
An empty small bag.
Plastering sand
Drainage stone-small smooth rounded stone
Regular sized blocks used for most building jobs.
Screenings-Very dusty gravel