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 big bag.
Gravel
Screenings-Very dusty gravel
An empty small bag.
Blocks
Regular 4" block with a 90 degree offset.
Regular 4" block with a 30 degree offset.
Aggregate mix
Quarry Products
4" clean large stone
Regular sized blocks used for most building jobs.
Concrete block that weighs one tonne.