1/2″ Chips, small stones, the next size up from 3/8″ chips. Suitable for driveways also. It is sold lose by the tonne.
Gravel
Clause 804
Bags
An empty big bag.
Blocks
Concrete block that weighs one tonne.
Regular 4" block with a 90 degree offset.
Regular 4" block with a 30 degree offset.
A much bigger block with a cavity/hole going through the center.
Chips
3/8" Chips. Very small stones
Regular sized blocks used for most building jobs.
Aggregate mix
Screenings-Very dusty gravel
Small empty heavy duty sand bag.