Chips
3/8" Chips. Very small stones
Bags
An empty small bag.
Blocks
Regular 4" block with a 90 degree offset.
Concrete block that weighs one tonne.
Gravel
Clause 804
Quarry Products
Drainage stone-small smooth rounded stone
Screenings-Very dusty gravel
2" clean medium sized stone
Plastering sand
Aggregate mix