1/2″ Chips, small stones, the next size up from 3/8″ chips. Suitable for driveways also. It is sold lose by the tonne.
Chips
3/8" Chips. Very small stones
Bags
An empty small bag.
Blocks
Regular 4" block with a 30 degree offset.
Gravel
Screenings-Very dusty gravel
Clause 804
Quarry Products
4" clean large stone
Aggregate mix
Drainage stone-small smooth rounded stone
The bigger thicker blocks up from the 4"
Regular sized blocks used for most building jobs.