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
Regular sized blocks used for most building jobs.
Chips
3/8" Chips. Very small stones
Bags
An empty big bag.
Regular 4" block with a 30 degree offset.
A much bigger block with a cavity/hole going through the center.
Gravel
Clause 804
Quarry Products
2" clean medium sized stone
4" clean large stone