An empty big bag.
An empty big bag which can hold a tonne of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
A much bigger block with a cavity/hole going through the center.
The bigger thicker blocks up from the 4"
Quarry Products
Plastering sand
Bags
Small empty heavy duty sand bag.
Chips
3/8" Chips. Very small stones
Regular 4" block with a 90 degree offset.
Drainage stone-small smooth rounded stone
Concrete block that weighs one tonne.
An empty small bag.
Gravel
Aggregate mix