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
Regular 4" block with a 30 degree offset.
Regular sized blocks used for most building jobs.
Gravel
Screenings-Very dusty gravel
Quarry Products
2" clean medium sized stone
Chips
3/8" Chips. Very small stones
4" clean large stone
Plastering sand
The bigger thicker blocks up from the 4"