Block dimensions:12″HIGH X 17″LONG X 4″THICK
Concrete block that weighs one tonne.
2" clean medium sized stone
A tonne bag of sand.
3/8" Chips. Very small stones
Small empty heavy duty sand bag.
Regular 4" block with a 90 degree offset.
A much bigger block with a cavity/hole going through the center.
Screenings-Very dusty gravel
The bigger thicker blocks up from the 4"