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
The bigger thicker blocks up from the 4"
Quarry Products
Drainage stone-small smooth rounded stone
Chips
3/8" Chips. Very small stones
Concrete block that weighs one tonne.
Bags
Small empty heavy duty sand bag.
A tonne bag of sand.
Regular sized blocks used for most building jobs.
Gravel
Screenings-Very dusty gravel
An empty small bag.
Regular 4" block with a 30 degree offset.