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
An empty big bag.
Blocks
Gravel
Aggregate mix
Screenings-Very dusty gravel
Quarry Products
Drainage stone-small smooth rounded stone
4" clean large stone
Plastering sand
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.
Regular 4" block with a 30 degree offset.