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
Concrete block that weighs one tonne.
An empty small bag.
Quarry Products
Drainage stone-small smooth rounded stone
Gravel
Aggregate mix
Regular sized blocks used for most building jobs.
Regular 4" block with a 90 degree offset.
Clause 804
Chips
3/8" Chips. Very small stones