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
The bigger thicker blocks up from the 4"
Quarry Products
Plastering sand
Gravel
Clause 804
Bags
Small empty heavy duty sand bag.
Screenings-Very dusty gravel
Regular 4" block with a 30 degree offset.
Concrete block that weighs one tonne.
4" clean large stone