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
Regular sized blocks used for most building jobs.
The bigger thicker blocks up from the 4"
Quarry Products
Plastering sand
Chips
4" clean large stone
Gravel
Clause 804
Drainage stone-small smooth rounded stone
Bags
An empty small bag.
Regular 4" block with a 90 degree offset.
Regular 4" block with a 30 degree offset.