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.
Blocks
Quarry Products
Drainage stone-small smooth rounded stone
4" clean large stone
Chips
Bags
Small empty heavy duty sand bag.
Gravel
Screenings-Very dusty gravel
Plastering sand
An empty big bag.
2" clean medium sized stone