Blocks
Regular 4" block with a 30 degree offset.
Gravel
Aggregate mix
Chips
A much bigger block with a cavity/hole going through the center.
Clause 804
Regular 4" block with a 90 degree offset.
Quarry Products
2" clean medium sized stone
4" clean large stone
3/8" Chips. Very small stones
Bags
An empty big bag.
Drainage stone-small smooth rounded stone