1/2″ Chips, small stones, the next size up from 3/8″ chips. Suitable for driveways also. It is sold lose by the tonne.
Bags
An empty small bag.
Blocks
An empty big bag.
Gravel
Clause 804
Concrete block that weighs one tonne.
Regular 4" block with a 30 degree offset.
Chips
3/8" Chips. Very small stones
Regular sized blocks used for most building jobs.
The bigger thicker blocks up from the 4"
Aggregate mix
Regular 4" block with a 90 degree offset.