Concrete Block from our concrete, cement & masonry range: quality surplus stock at a lower price than retail. Suitable for new builds, repairs and DIY projects. Pickup is free; shipping is available. Need a larger quantity or a different size? Send us a message. Photo: "Concrete-block,japan" by katorisi, CC BY 2.5, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Concrete-block,japan.JPG).