Regular 4" block with a 30 degree offset.
Concrete block that weighs one tonne.
4" clean large stone
A much bigger block with a cavity/hole going through the center.
2" clean medium sized stone
Regular 4" block with a 90 degree offset.
An empty big bag.
The bigger thicker blocks up from the 4"
Aggregate mix
3/8" Chips. Very small stones
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