Regular 4″ block with a 90 degree offset.
Regular 4″ block with a 90 degree offset. Can be bought individually or as a bale of 30.
Drainage stone-small smooth rounded stone
A tonne bag of sand.
A much bigger block with a cavity/hole going through the center.
Regular sized blocks used for most building jobs.
Small empty heavy duty sand bag.
4" clean large stone
Concrete block that weighs one tonne.
The bigger thicker blocks up from the 4"
An empty big bag.