A much bigger block with a cavity/hole going through the center.
They are a much bigger block than the 4″ and 6″ blocks with a cavity/hole going through the center of the block. Sold in bales of 20 or by single blocks on their own.
Quarry Products
A tonne bag of sand.
Drainage stone-small smooth rounded stone
Blocks
Concrete block that weighs one tonne.
Bags
Small empty heavy duty sand bag.
Regular 4" block with a 90 degree offset.
Gravel
Screenings-Very dusty gravel
An empty big bag.
Plastering sand
4" clean large stone