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
4" clean large stone
Blocks
Regular 4" block with a 90 degree offset.
2" clean medium sized stone
Bags
Small empty heavy duty sand bag.
Gravel
Clause 804
A tonne bag of sand.
Chips
3/8" Chips. Very small stones
Plastering sand