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
Aggregate mix
Quarry Products
4" clean large stone
Blocks
Regular sized blocks used for most building jobs.
2" clean medium sized stone
Bags
Small empty heavy duty sand bag.
The bigger thicker blocks up from the 4"
Drainage stone-small smooth rounded stone
Regular 4" block with a 30 degree offset.