Blocks
Chips
3/8" Chips. Very small stones
Bags
An empty big bag.
The bigger thicker blocks up from the 4"
Quarry Products
Drainage stone-small smooth rounded stone
4" clean large stone
Plastering sand
Small empty heavy duty sand bag.
Regular 4" block with a 30 degree offset.
2" clean medium sized stone
A tonne bag of sand.
Gravel
Clause 804