Concrete grey block otherwise known as besser blocks are a grey concrete block. They are often used for retaining walls, structural walls, garden beds and edging. These blocks can be rendered to suit your home.
It is important to note that each council has different restrictions on the height that walls can be built without approval. For a more DIY suitable retaining solution see interlocking blocks such as the National Masonry Garden Wall.
Find the full range of grey concrete blocks in the 200 series, 100 series and 150 series at PBC Landscape Supplies. They are available for pick up or alternatively arrange to have your concrete grey block included in your next delivery.