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.
Quarry Products
Plastering sand
Blocks
Concrete block that weighs one tonne.
Chips
3/8" Chips. Very small stones
Gravel
Screenings-Very dusty gravel
2" clean medium sized stone
4" clean large stone
Regular 4" block with a 30 degree offset.
Clause 804