An empty small bag.
An empty small bag which can be filled with 4 stone weight 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.
Quarry Products
4" clean large stone
Gravel
Screenings-Very dusty gravel
Bags
An empty big bag.
Regular 4" block with a 90 degree offset.
2" clean medium sized stone
Regular sized blocks used for most building jobs.
Small empty heavy duty sand bag.
Chips
3/8" Chips. Very small stones
Aggregate mix
The bigger thicker blocks up from the 4"