1/2″ Chips, small stones, the next size up from 3/8″ chips. Suitable for driveways also. It is sold lose by the tonne.
Blocks
A much bigger block with a cavity/hole going through the center.
Bags
Small empty heavy duty sand bag.
Quarry Products
2" clean medium sized stone
Regular 4" block with a 30 degree offset.
Concrete block that weighs one tonne.
Regular sized blocks used for most building jobs.
An empty small bag.
4" clean large stone
An empty big bag.
Gravel
Clause 804