Block dimensions:12″HIGH X 17″LONG X 4″THICK
Regular 4" block with a 90 degree offset.
A much bigger block with a cavity/hole going through the center.
4" clean large stone
A tonne bag of sand.
Screenings-Very dusty gravel
Drainage stone-small smooth rounded stone
3/8" Chips. Very small stones
Regular 4" block with a 30 degree offset.