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.
Bags
Small empty heavy duty sand bag.
Blocks
Quarry Products
Plastering sand
Chips
Regular sized blocks used for most building jobs.
Gravel
Aggregate mix
Regular 4" block with a 30 degree offset.
2" clean medium sized stone
A tonne bag of sand.
Drainage stone-small smooth rounded stone
An empty small bag.