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
Regular sized blocks used for most building jobs.
Quarry Products
2" clean medium sized stone
Regular 4" block with a 30 degree offset.
Gravel
Clause 804
Plastering sand
A much bigger block with a cavity/hole going through the center.
Drainage stone-small smooth rounded stone
Regular 4" block with a 90 degree offset.
4" clean large stone