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
2" clean medium sized stone
Blocks
Concrete block that weighs one tonne.
Drainage stone-small smooth rounded stone
Regular 4" block with a 30 degree offset.
Regular 4" block with a 90 degree offset.
Bags
Small empty heavy duty sand bag.
Chips
3/8" Chips. Very small stones
Gravel
Clause 804