A much bigger block with a cavity/hole going through the center.
They are a much bigger block than the 4″ and 6″ blocks with a cavity/hole going through the center of the block. Sold in bales of 20 or by single blocks on their own.
Gravel
Clause 804
Quarry Products
4" clean large stone
Blocks
Bags
An empty big bag.
Regular 4" block with a 30 degree offset.
Plastering sand
An empty small bag.
Chips
3/8" Chips. Very small stones
Small empty heavy duty sand bag.