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
Concrete block that weighs one tonne.
Bags
An empty small bag.
Gravel
Screenings-Very dusty gravel
Quarry Products
4" clean large stone
Small empty heavy duty sand bag.
Aggregate mix
Clause 804
2" clean medium sized stone
Regular 4" block with a 30 degree offset.