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
Concrete block that weighs one tonne.
Regular sized blocks used for most building jobs.
Gravel
Aggregate mix
Regular 4" block with a 90 degree offset.
Regular 4" block with a 30 degree offset.
Quarry Products
2" clean medium sized stone
Chips
Bags
Small empty heavy duty sand bag.
3/8" Chips. Very small stones
A tonne bag of sand.
Drainage stone-small smooth rounded stone