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.
Bags
Small empty heavy duty sand bag.
Blocks
Concrete block that weighs one tonne.
Gravel
Aggregate mix
Regular 4" block with a 90 degree offset.
Chips
3/8" Chips. Very small stones
Regular 4" block with a 30 degree offset.
Regular sized blocks used for most building jobs.
An empty small bag.
The bigger thicker blocks up from the 4"