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
Concrete block that weighs one tonne.
Quarry Products
Plastering sand
4" clean large stone
Aggregate mix
The bigger thicker blocks up from the 4"
Regular 4" block with a 90 degree offset.
Chips
Screenings-Very dusty gravel
Drainage stone-small smooth rounded stone