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
Quarry Products
2" clean medium sized stone
4" clean large stone
Drainage stone-small smooth rounded stone
Regular sized blocks used for most building jobs.
Chips
3/8" Chips. Very small stones
Bags
An empty small bag.
Plastering sand
Gravel
Aggregate mix
Regular 4" block with a 30 degree offset.