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.
Gravel
Aggregate mix
Blocks
Regular sized blocks used for most building jobs.
Chips
The bigger thicker blocks up from the 4"
Quarry Products
2" clean medium sized stone
Regular 4" block with a 90 degree offset.
3/8" Chips. Very small stones
A tonne bag of sand.
4" clean large stone
Concrete block that weighs one tonne.