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
Quarry Products
A tonne bag of sand.
Chips
3/8" Chips. Very small stones
Regular 4" block with a 30 degree offset.
Gravel
Screenings-Very dusty gravel
Concrete block that weighs one tonne.
4" clean large stone
Bags
Small empty heavy duty sand bag.
Clause 804
Drainage stone-small smooth rounded stone