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.
The bigger thicker blocks up from the 4"
Small empty heavy duty sand bag.
Concrete block that weighs one tonne.
4" clean large stone
An empty big bag.
A much bigger block with a cavity/hole going through the center.
2" clean medium sized stone
Regular 4" block with a 30 degree offset.
Drainage stone-small smooth rounded stone