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.
Blocks
Regular 4" block with a 30 degree offset.
Quarry Products
A tonne bag of sand.
Bags
An empty small bag.
Plastering sand
2" clean medium sized stone
Concrete block that weighs one tonne.
Small empty heavy duty sand bag.
An empty big bag.