Drainage stone-small smooth rounded stone
Drainage stone are small smooth rounded stone used for draining water away from places where water is unwanted. It is sold lose by the tonne.
Blocks
Concrete block that weighs one tonne.
Chips
Regular 4" block with a 90 degree offset.
Regular sized blocks used for most building jobs.
A much bigger block with a cavity/hole going through the center.
The bigger thicker blocks up from the 4"
Bags
An empty small bag.
Gravel
Clause 804
3/8" Chips. Very small stones